Explanation:
[tex]from \: newton \: first \: equation \\ V = U + at \\ 0 = U + ( - 6 \times 2) \\ U = 12 \: m {s}^{ - 1} \\ from \: newtons \: third \: equation \\ {V}^{2} = {U}^{2} + 2aS \\ 0 = {12}^{2} + (2 \times - 12 \times \: S ) \\ 144 = 24S \\S = 6 \: m [/tex]
A car was traveling at a certain speed. It then accelerates for 5.0 s with an acceleration of 1.6 m/s2, and reaches a speed of 20 m/s. What was its initial speed?
I will give u a brainest
Answer:
12m/s
Explanation:
To find the initial speed of the car, we need to find the how much it accelerated/increased in speed and then subtract it from its final speed.
We can do this by using the equation: [tex]a=\frac{\Delta v}{t}[/tex]
Which we can rearrange to find change in velocity: [tex]\Delta v=at[/tex]
The given acceleration is 1.6m/s^2, and the time is 5s. Therefore the car's change in speed was [tex]\Delta v = (1.6)(5)\\\Delta v = 8m/s[/tex]
Since the final speed was 20m/s, we can now simply subtract the change in speed to find the initial speed:
20 - 8 = 12
The initial speed of the car was 12m/s.
Hope this helped!
Three resistors of values 2 Q, 3 Q and 5 Q are connected in series with a battery of voltage 6.0 V. Calculate the current through each of the resistors, and the current through the battery.
Answer:
Current = 0.6 A
Explanation:
Given that,
Three resistors 2 ohms, 3 ohms and 5 ohms are connected in series with a battery of voltage 6 V.
In series combination of resistors, the current through each resistor is the same while the voltage divides.
The equivalent resistance in this case is given by :
[tex]R_{eq}=R_1+R_2+....[/tex]
Put all the values,
[tex]R_{eq}=2+3+5\\\\R_{eq}=10\ \Omega[/tex]
Let I be the current. Using Ohm's law,
[tex]V=IR\\\\I=\dfrac{V}{R}\\\\I=\dfrac{6}{10}\\\\I=0.6\ A[/tex]
So, the current through each resistor and the current through the battery is equal to 0.6 A.
EASY BRAINLIEST PLEASE HELP!!
-if you answer correctly ill give you brainliest which will give you 100pts-
(if you put links or don't answer accordingly im reporting your account)
Answer:
I think the awnser is B (but don't qoute me on that) if its right then yay but if its wrong im sorry
Explanation:
Answer:
Solution given:
frequency[f]=x
velocity[V]=15000m/s
wave length=59m
we have
wave length=[tex] \frac{V}{f} [/tex]
59m=[tex] \frac{15000}{x} [/tex]
x=[tex] \frac{15000}{59} [/tex]=254.Hz
B.254 hz
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.
1 Newton = 1,,,,,,,,
Answer:
kg*m/2
Explanation:
hope this helps just did it
Answer:
c
Explanation:
1. Astronomical observatories have been available since ancient times, and many cultures set aside special sites for astronomical observations. The thing modern observatories have that was missing from these older observatories until about 1610 was: a. a dark site, where lights did not get in the way b. graduate students or other assistants for sharing the astronomer’s work c. a method of keeping good records d. a way of measuring from what general direction in the sky a beam of light was coming e. telescopes
Answer:
e telescopes
Explanation:
may i be marked brainliest?
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!
If a ball is thrown straight up with an initial velocity of 20 m/s upward, what is the maximum height it will reach?
Indicar objetosque puedan ser observados a simple vista, con microscopio, con microscopio electrico y con miscroscopio de transmicion. Indicar cuel es orden de magnitud de cada uno
Answer:
En esta respuesta voy a usar la unidad μm, tal que:
1 μm = 1*10^(-9) m
Objetos que pueden ser observados a simple vista:
Son todos aquellos objetos que podemos observar simplemente con nuestros ojos, con ellos podemos observar desde un edificio (con tamaños de decenas de metros) hasta algunos cabellos, que pueden tener un diámetro de 0.1 mm
Cosas más pequeñas que estás muy difícilmente se pueden ver a simple vista.
Con un microscopio podremos ver cosas del tamaño de una célula, como glóbulos blancos, rojos, algunos microorganismos, etc, los cuales rondan un tamaño de unos 10 μm. Naturalmente, distintos microscopios tendrán distintas amplificaciones (por lo que con algunos podremos ver objetos muy pequeños que con otros no).
Microscopio eléctrico:
Este microscopio usa electrones en lugar de luz para formar imágenes.
Con él podremos observar cosas como las componentes de una célula (membranas, orgánulos grandes, etc), los cuales pueden medir unos pocos nanómetros (por ejemplo, una membrana celular tendrá un tamaño de entre 5 μm y 10 μm)
Microscopio de transmisión.
Tener en cuenta que el microscopio de transmisión es un microscopio eléctrico, el cual lanza un haz de electrones al objeto que se desea observar, de tal forma que algunos de estos electrones rebotan formando así la imagen virtual amplificada que podemos observar.
Con estos aparatos podemos ver orgánulos pequeños (0.5 μm), y lo más pequeño que podemos ver (con los microscopios más potentes) son columnas de átomos (0.1 μm)
What is globalization?
Answer:the process by which businesses or other organizations develop international influence or start operating on an international scale.
Explanation:
There are 2 ways of collecting the sun’s energy. What are they? Give an example of each.
Two positive charges are placed near each other what happens between the charges
Answer: coll
Explanation:
Answer: coll
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Answer: coll
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Answer: coll
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Answer: coll
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Answer: coll
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Answer: coll
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Answer: coll
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Answer: coll
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Answer: coll
Explanation:
Answer: coll
Explanation:
Answer: coll
Explanation:
Answer: coll
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Answer: coll
Explanation:
Answer: coll
Explanation:
Answer: coll
Explanation:
Answer: coll
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Answer: coll
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Answer: coll
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Answer: coll
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Answer: coll
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Answer: coll
Explanation:
What makes magnetic objects different from non- magnetic objects?
Unpolarized light can undergo polarization by this means off a nonmetallic surfaces.
Answer:
तिकडी एकच
Explanation:
आप सल क्ल वल दन रव दंचंबी एक गम ok plz
The Playground
A and G are at same height and where
skateboarder starts
E
A
G
ao oon
E
С
vai
OOHO
F
D
O meters
List in order from greatest to least the Kinetic energy from greatest to least.
Drag the boxes in the correct order
1
1
DDDDDD
2.List two changes an unbalanced force can cause.
Answer:
By applying an unbalanced force, you can change the motion of an object. Unbalanced forces can make an object at rest start moving, make a moving object stop, or change the direction and speed of the object.
Explanation:
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]
I need help with this assignment please
Answer:
ill try
Explanation:
let me find this answer for you
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
Lack of portion control contributes to the obesity problem in the United States.
True
False
afootball of mass 550g is at rest on the ground the football is kicked with a force of 108 newton the footballers boot is in contact with the ball for 0.3 minute what is the kenitic
energy of the ball
If "0.3 minute" is correct, then it's 9,543,272 Joules.
If it's supposed to say "0.3 SECOND", then the KE is 2,651 Joules.
Electromagnets are used in to produce a rotating magnetic field that turns a rotor.
A) TVs
B) computers
C) generators
D) motors
Answer:
A motor
Explanation:
(I'm not that good in physics but from what I know it might be motor or generator, I'm not 100% sure on this answer)
Which of the following has contributed to the obesity problem in the United States?
variation of serving sizes
distortion of serving sizes
packaging of serving sizes
labeling of serving sizes
Answer:
Variation of serving sizes
Explanation:
Explanation:
The two most commonly advanced reasons for the increase in the prevalence of obesity are certain food marketing practices and institutionally-driven reductions in physical activity, which we have taken to calling “the big two.” Elements of the big two include, but are not limited to, the “built environment”, increased ...
HELP ME PLEASE WITH MY HOMEWORK ILL GIVE BRAINLIEST
Answer: Mass
Explanation:
Two people are trying to push a large box across a floor. Person 1 pushes with a force of 15 N to the right, while person 2 pushed with a force of 20 N to the right. What is the net force acting on the box?
5 N to the left
5 N to the right
35 N to the left
35 N to the right
Answer:
35 N to the right
Explanation:
When calculating net force when both forces are on the same side you add them when they are going against each other you subtract them.
how long does it take a ball to fall 5 meters
Explain how interactions can both benefical and harmful to the organisms in an community
list 10 qualities of an effective leader.
answer: vision
inspiration
stragic and critical thinking
interpersonal complication
autencity and self awareness
open mindness and creativity
flexibility
responsibility and dependability
Answer:
effective leader
1. must stand on his/her words
2. must trust in his/her capabilities
3. must learn from mistakes and never repeat them
4. should motivate others to go in a right path
5. should have an out of the box thinking ability
6. must be responsible towards his duty
7. never disrespect someone weaker than him
8. must trust his followers
9. must have faith in them
10. always be responsible for the things his/her followers do
resistors with value of 4 and 6 are connected in parallel to one another and the combination is connected in series to a 36 V battery. Find the current through each resistor and the power dissipated by each resistor
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