Answer:
Thermal energy can be transferred to one object to another in the form of heat. It causes molecules and atoms to collide with each other because of the rising of heat.
Explanation: Well thermal energy is a example of kinetic energy. It is heated by motion. It is heat that can be measured
Please help! I will mark you as brainliest!
Research revealed that patients who received chemotherapy in a hospital setting subsequently experienced
a(n) immune response when they again visited the hospital. In this example, the would be
classified as the US.
O enhanced; hospital
O suppressed; hospital
о
enhanced; chemotherapy
O suppressed; chemotherapy
Answer: suppressed; chemotherapy
Explanation:
Chemotherapy is typically a drug treatment whereby powerful chemicals are used to kill the fast growing cells in ones body. Chemotherapy is usually used in the treatments of cancer.
Research revealed that patients who received chemotherapy in a hospital setting subsequently experienced
a (suppressed) immune response when they again visited the hospital. In this example, the (chemotherapy) would be classified as the US.
There are 2 ways of collecting the sun’s energy. What are they? Give an example of each.
What happens when you disconnect an electromagnet from battery?
A.it wil explode
B.it will continue to attract non-metals
C.it will stop from attracting metals
E.nothing will happen
Answer:
b.
If you disconnect the wire, the magnetic field disappears and the nail is no longer a magnet. ... The current flowing through the wire makes the wire hot and drains the battery quickly.
Explanation:
As the amount of charge on two objects increases, the strength of the electrical force between the objects increases. decreases. varies. remains the same.For which pair of objects would adding the same amount of electrons to each object result in a decrease in the electric force? two positively charged objects two negatively charged objects two objects that have no charge two objects that have opposite charges
Answer:
a. Increases
b. Two objects that have opposite charges
Explanation:
a. As the amount of charge on two objects increases, the strength of the electrical force between the objects increases. decreases. varies. remains the same.
According to Coulomb's law, the electrical force, F between two charges q and Q is directly proportional to the product of the charges.
So, F ∝ qQ
So, if q and Q increase, their product increases and thus, the strength of the electrical force between them increases.
So, if the amount of charge of two objects increases, the strength of the electrical force between the objects increases.
b. For which pair of objects would adding the same amount of electrons to each object result in a decrease in the electric force? two positively charged objects two negatively charged objects two objects that have no charge two objects that have opposite charges
Since according to Coulomb's law, the electrical force, F between two charges q and Q is directly proportional to the product of the charges.
So, F ∝ qQ
If the same amount of electrons are added to both charges and the charges are opposite in sign, the magnitude of one charge increases while that of the other charge decreases. so the product qQ decreases and thus F decreases.
So, the electric force decreases when the same amount of electrons is added to two objects that have opposite charges.
Answer:
A increases
Explanation:
A 10 kg sled is sitting on top of a 10 m hill what is the potential energy of the sled
Answer:
Explanation:
potential energy=mass*height*gravity
=10*10*9.8
=100*9.8
980 joule
Over what period of time will be birr 500 amount to birr 900 at the rate of 8% simple interest?
The time taken is 10 years.
What is simple interest?The term simple interest is an interest that is charged only on the principal and not on the interest.
We have the following;
Principal = 500 birr
amount = 900 birr
rate = 8%
Interest = 900 birr - 500 birr = 400 birr
400 = 500 × 8 × T/100
400 × 100 = 500 × 8 × T
T = 400 × 100/500 × 8
T = 10 years
Learn more about simple interest:https://brainly.com/question/2793278
Answer:
10 years
Explanation:
To solve this first we have to find the simple interest.
Let us find it now.
Interest = birr 900 - birr 500
= birr 400
Now we are having,
Amount = birr 900
Principal = birr 500
Interest = birr 400
rate = 8%
Period of time = ?
Let us use the formula to find the period of time.
Simple interest = Principal × Rate × Time ÷ 100
birr 400 = birr 500 × 8 × t ÷ 100
birr 400 × 100 = 4000t
40000 = 4000t
Divide both sides by 4000.
10 = t
Therefore, the time is 10 years.
Let me know if you have any other questions. :-)
-183° degrees Celsius to kelvin
Answer:
90.15K
Explanation:
The formula is x°C + 273.15 = yK
Answer:
(-183°C) = 90.15K
Explanation:
-183°C is given
Now,
K = °C + 273
K = (-183) + 273.15
K = 90.15
Thus, (-183°C) = 90.15K
-TheUnknownScientist
a soccer ball is kicked and left
the ground at angle an 45° above the horizantal, moving at 25 m/s.
calculate for the:
a. hang time of the ball
b. initial horizontal velocity
c. initial vertical velocity
d. maximum height
e. the range travelled by ball
Answer:
Explanation:
Considering that this is parabolic motion, we know that the time the ball is in the air begins the instant it leaves the ground, reaches up to its max height, and then begins falling until it reaches the ground. Duh, right? Some important things happen during this trip. There are a few things we need to know in order to even begin the problem. Parabolic motion has x and y coordinates because it is 2-dimmensional; the acceleration in the x dimension is not the same as the acceleration in the y dimension; the velocity of an object at its max height is always 0; the time it takes to reach its max height (where the max height is half the distance the object travels) is half the time it takes to make the whole trip. Yikes. That's a lot to know and much to remember! Don't you just LOVE physics!?
For a. the hang time is the time the ball was in the air. Some of that stuff we talked about above is pertinent to solving this problem. We know that the velocity of the ball is 0 at its max height, and we also know that if we find the time it takes to reach its max height, we can double that number to find how long it was in the air for the whole trip. Use the one-dimensional equation
[tex]v=v_0+at[/tex] to find out how long it took to reach the max height. Even though we don't yet know the max height, we DO know that the velocity at that point is 0. BUT before we do that, since we are working in the y-dimension only, it would behoove us (benefit us) to find the velocity particular to this dimension. We are going to answer c. first, then backtrack.
c. wants the initial vertical velocity. That is found in the magnitude of the "blanket" or generic velocity times the sin of the angle, namely:
[tex]V_y=25sin(45)[/tex] so
[tex]V_y=[/tex] 18 m/s Now we can use that as the initial upwards velocity in part a:
[tex]v=v_0+at[/tex] and filling in:
0 = 18 + (-9.8)t and
-18 = -9.8t so
t = 1.8 seconds. But remember, this is only half the time it was in the air. The whole trip, then, takes 2(1.8) which is
t = 3.6 seconds
That's a and c. Now for b:
b. asks for the x component of the velocity:
[tex]V_x=Vcos\theta[/tex] which works out to be the same as the vertical velocity, since the sin and cos of 45 degrees is the same:
[tex]V_x=25cos45[/tex] and
[tex]V_x=[/tex] 18 m/s
Onto d:
d. wants the max height. Remember, it took 1.8 seconds to get to the max height, so using yet another one-dimensional equation:
Δx = v₀t + [tex]\frac{1}{2}at^2[/tex] where Δx is the displacement, v₀ is the initial upwards velocity, a is the pull of gravity, and t is the time it takes to reach that max height (Δx, our unknown). Filling in:
Δx = [tex]18(1.8)+\frac{1}{2}(-9.8)(1.8)^2[/tex] and if you do the rounding correctly, you'll end up with this:
Δx = 32 - 16 so
the max height, Δx, is 16 meters.
e. wants the range. That translates to the distance the ball traveled. This is found in a glorified version of d = rt, where d is displacement, r is velocity, and t is...well, time (that doesn't change):
Δx = vt so
Δx = 18(3.6) remember that the ball was in the air for a total of 3.6 seconds, so
Δx = 65 meters.
Phew!!!!! That's a lot! I suggest you learn your physics or this will make you insane by the end of the course!
Answer:
3
Explanation:
A person walking in high heals can damages the floor by making small dimples in the
floor since all their weight is concentrated on the tip of the high heal. It the person
weighs 81 kg and the high of the tip of the high heal is 3.5 cm2, what is the force over
the floor?
SHOW WORK IF POSSIBLE TANKS A LOT
Answer:
2 314.28571 kg / m
Explanation:
divide
and you see
PLEASE HELP URGENT!!! A 20.0 cm tall object is placed 50.0 cm in front of a convex mirror with a radius of curvature of 34.0 cm. Where will the image be located, and how tall will it be? Please show all work using the following steps...
Step 1: Find the focal length, step 2: find the image distance using the mirror equation step 3: Use the magnification relationship to find the image height.
Explanation:
1. f = r/2 = 34.0/2 = 17.0 cm
2. 1/s'= -1/f - 1/s
= -1/17 - 1/50
= (-50-17) /850
= (-67) /850
s' = 850/(-67) = - 12.69 cm
3. M = |s'/s| = |-12.69/50| = 0.25
h' = 0.25×20 = 4 cm
Where do human get the stuff they need to survive?
Answer:
Humans survive through gaining nutrients by eating
Answer:
We must have food, water, air, and shelter to survive. If any one of these basic needs is not met, then humans cannot survive. Oxygen is one of the most essential human needs. Our bodies need a consistent supply of it to function properly. Without access to oxygen, you can experience a condition known as cerebral hypoxia, which affects the brain. As little as five minutes without air can result in brain damage. We get food from plants and animals, we get water from rivers and streams, and we get shelter from building anything that is around.
Explanation:
help please physics !!
Answer:
Option A. 1 bar = 1 atm
Explanation:
Pressure has various units of measurement. Each unit of measurement can be converted to other units of measurement. For example:
1 atm = 1 bar
1 atm = 760 mmHg
1 atm = 760 torr
1 atm = 1×10⁵ N/m²
1 atm = 1×10⁵ Pa
With the above conversion scale we can convert from one unit to the other.
Considering the question given above, it is evident from the coversion scale illustrated above that only option A is correct.
Thus,
1 bar = 1 atm
VAMDNVABNATNAMDTEMCYSPLDDNHNMQTYY
que es bandaaa
Un neumático sin cámara, soporta una presión de 1.5 atm cuando la temperatura ambiente es de 300°K. ¿Qué presión llegará a soportar dicho neumático si, en el transcurso de un viaje, las ruedas alcanzan una temperatura de 67ºC? Atm
Answer:
El neumático soportará una presión de 1.7 atm.
Explanation:
Podemos encontrar la presión final del neumático usando la ecuación del gas ideal:
[tex] PV = nRT [/tex]
En donde:
P: es la presión
V: es el volumen
n: es el número de moles del gas
R: es la constante de gases ideales
T: es la temperatura
Cuando el neumático soporta la presión inicial tenemos:
P₁ = 1.5 atm
T₁ = 300 K
[tex] V_{1} = \frac{nRT_{1}}{P_{1}} [/tex] (1)
La presión cuando T = 67 °C es:
[tex] P_{2} = \frac{nRT_{2}}{V_{2}} [/tex] (2)
Dado que V₁ = V₂ (el volumen del neumático no cambia), al introducir la ecuación (1) en la ecuación (2) podemos encontrar la presión final:
[tex] P_{2} = \frac{nRT_{2}}{V_{2}} = \frac{nRT_{2}}{\frac{nRT_{1}}{P_{1}}} = \frac{P_{1}T_{2}}{T_{1}} = \frac{1.5 atm*(67 + 273)K}{300 K} = 1.7 atm [/tex]
Por lo tanto, si en el transcurso de un viaje las ruedas alcanzan una temperatura de 67 ºC, el neumático soportará una presión de 1.7 atm.
Espero que te sea de utilidad!
Light refracts when it
Which of the following statements best describes the method of energy conservation known as cogeneration?
Answer:
heat and power
Explanation:
is the simultaneous production of electricity and heat both of which are used
¿Qué es la carga eléctrica de un cuerpo?
Answer:
Las células del interior son negativas, mientras que en el exterior son positivas.
Explanation:
Que tenga un buen día :)
Explain how interactions can both benefical and harmful to the organisms in an community
What is globalization?
Answer:the process by which businesses or other organizations develop international influence or start operating on an international scale.
Explanation:
Marine science what is climate change?
Answer:
In marine ecosystems, climate change is associated with concurrent shifts in temperature, circulation, stratification, nutrient input, oxygen content, and ocean acidification. There are also strong linkages between climate and species distributions, phenology, and demography.
Explanation:
Mark her brainliest
Se aplica una fuerza de 8N a un cochecito de 650 gramos. Calcula: a) aceleración, b)espacio recorrido en 5 segundos y c) velocidad a los 3 segundos si parte del reposo
Respuesta:
a) 12.3 m/s²
b) 153.75 m
c) 36.9 m/s
Explicación:
Paso 1: Información provista
Fuerza aplicada (F): 8 NMasa del cochecito (m): 650 gPaso 2: Calcular la aceleración (a) del cochecito
Usaremos la segunda ley del movimiento de Newton.
F = m × a
a = F/m = 8 N / 0.650 kg = 12.3 m/s²
Paso 3: Calcular el espacio recorrido (x) en 5 segundos (t).
Usaremos la siguiente fórmula cinemática para un movimiento rectilineo uniformemente acelerado.
x = 1/2 × a × t²
x = 1/2 × 12.3 m/s² × (5s)² = 153.75 m
Paso 4: Calcular la velocidad (v) a los 3 segundos si parte del reposo
Usaremos la siguiente fórmula cinemática para un movimiento rectilineo uniformemente acelerado.
v = a × t
v = 12.3 m/s² × 3 s = 36.9 m/s
Los cálculos dados serían los siguientes:
a). Aceleración = 12,3 m / s ^ 2
B). Distancia recorrida en 5 segundos = 153,75 m
C). Velocidad en 3 segundos = 36,9 m / s
Dado que,
Fuerza aplicada = 8N
Peso de la silla de paseo en gramos = 650g
a). To find the aceleración,
[tex]F = m[/tex] × [tex]a[/tex]
[tex]a = F/m[/tex]
[tex]= 8 N/0.650 kg[/tex]
[tex]= 12.3 m/s^2[/tex]
Now,
b). :-espacio recorrido en 5 segundos y
Using the Kinematic formula:
[tex]x = 1/2[/tex] × [tex]a[/tex] × [tex]t^2[/tex]
[tex]x = 1/2[/tex] × [tex]12.3 m/s^2[/tex] × [tex](5s)^2[/tex]
= 153.75 m
c). Using the same formula,
velocidad a los 3 segundos si parte
[tex]v = a[/tex] × [tex]t[/tex]
[tex]v = 12.3 m/s^2[/tex] × [tex]3 s[/tex]
= 36.9 m/s
Learn more about "Acceleration" here:
brainly.com/question/3046924
A 50.0 g golf ball is struck by a driver whose head has a mass of 500.0 kg. The final speed of the golf ball after leaving the tee is 45.0 m/s. Find the final momentum of the golf ball.
A)2.5 kg·m/s
B)5.0 kg·m/s
C)7.5 kg·m/s
D)10.0 kg·m/s
this is my answer sure po ako n tama iyan
A bowling ball moving with a velocity of 5V to the right collides elastically with a beach ball moving at a velocity 2V to the left. The bowling ball barely slows down. What is the approximate velocity of the beach ball after the collision?
Answer:
[tex]v'_2=3V[/tex]
Explanation:
From the question we are told that:
Bowling ball Speed [tex]v_1=5 m/s[/tex]
Beach ball Speed [tex]v_2=2 m/s[/tex]
Let The Mass be equal i.e
[tex]M_1=M_2[/tex]
Therefore
Generally the equation for Velocity of beach ball after collision [tex]v'_2[/tex] is mathematically given by
Since Velocity is Vector Quantity
Therefore
[tex]v'_2=v_1-v_2[/tex]
[tex]v'_2=5-2[/tex]
[tex]v'_2=3V[/tex]
4-year-old becomes frightened of the dark and refuses to go to sleep at night. How would a psychoanalyst and a behaviorist differ in their views of how this problem developed?
Answer:
A psychoanalyst would see the 4-year-old as having an unresolved conflict where the brain judges or evaluates how good or bad the darkness is, or the usefulness of sleeping in the dark at night based on a comparison, due to the child's exploration of the world around him. A psychoanalyst might see the child's refusal to sleep at night due to the dark as a fear created for instance when the child sleeps alone without the parent. This might change if the child sleeps at night beside the parent in the dark.
While behaviorists would look at how having previous negative experiences in the dark influences a child's behavior towards staying in the dark. This fear would be reinforced with more negative experiences in the dark such as having a bad nightmare whenever the child sleeps in the dark, a feeling of hearing, or seeing strange things while in the dark. These examples would have built a behavioral pattern where the child would be conditioned to respond fearfully to being in the dark.
If you have 5.6 grams of a radioactive isotope with a half-life of 150 years:
How much of the isotope will you have left after 750 years?
Answer:
0.175g
Explanation:
A = A02^-(t/hl)
= (5.6g)2^-(750/150)
= 0.175g
If a ball is thrown straight up with an initial velocity of 20 m/s upward, what is the maximum height it will reach?
Si está probando u motor para un nuevo modelo de coche ; este es capaz de pasar de 0 a 100 km/h en 7,5 segundos . Si el coche tiene una masa de 550 kg cuál será la fuerza que realiza el motor ?
Answer:
La fuerza que realiza el motor es 2035 N.
Explanation:
Podemos encontrar la fuerza del motor usando la siguiente ecuación:
[tex] F = ma [/tex] (1)
En donde:
m: es la masa del coche = 550 kg
a: es la aceleración
Se puede calcular la aceleración mediante la siguiente ecuación cinemática:
[tex] v_{f} = v_{0} + at [/tex] (2)
En donde:
[tex] v_{f}[/tex]: es la velocidad final del coche = 100 km/h
[tex] v_{0} [/tex]: es la velocidad inicial del coche = 0
t: es el tiempo = 7,5 s
Resolviendo la ecuación (2) para "a" tenemos:
[tex] a = \frac{v_{f} - v_{0}}{t} = \frac{100\frac{km}{h}*\frac{1000 m}{1 km}*\frac{1 h}{3600 s} - 0}{7,5 s} = 3,70 m/s^{2} [/tex]
Entonces, la fuerza es:
[tex] F = ma = 550 kg*3,70 m/s^{2} = 2035 N [/tex]
Por lo tanto, la fuerza que realiza el motor es 2035 N.
Espero que te sea de utilidad!
Lack of portion control contributes to the obesity problem in the United States.
True
False
This is the question
please help asap
I am not sure of this, but it is either the third option or the last option.
Please, I need to finish my homework.
An object is to the left of a convex mirror. Describe the two rays needed to indicate the location and height of the image. Additionally, state what side of the mirror the image is on and whether it is real or virtual.
Answer:
mark me as the brainly plss