Answer:
v₂ = 5.7 m/s
Explanation:
We will apply the law of conservation of momentum here:
[tex]Total\ Initial\ Momentum = m_{1}v_{1} + m_{2}v_{2}\\[/tex]
where,
Total Initial Momentum = 340 kg.m/s
m₁ = mass of bike
v₁ = final speed of bike = 0 m/s
m₂ = mass of Sheila = 60 kg
v₂ = final speed of Sheila = ?
Therefore,
[tex]340\ kg.m/s = m_{1}(0\ m/s) + (60\ kg)v_{2}\\v_{2} = \frac{340\ kg.m/s}{60\ kg}\\\\[/tex]
v₂ = 5.7 m/s
Answer:
5.7 I got it right on edg 2021
Explanation:
A what is a chemical secreted by your glands that regulates the activities of different body cells.
The chemical secreted by glands that regulates the activities of different body cells is HORMONE.
A car drives 30 m north in 1.5 seconds and drives 60 east in 2 seconds. What is the average velocity
Answer:
19.2 m/s
Explanation:
From the question,
Velocity = displacement/time = d/t
V = d/t.................................. Equation 1
Average velocity = Total displacement/ total time
Total dispalcement = √(30²+60²) = √4500 = 67.08 m
Total time = 1.5+2 = 3.5 s.
Substitute these value into equation 1
V = 67.08/3.5
V = 19.2 m/s.
Hence the average velocity is 19.2 m/s
The parameter given for the car during transit is 30 m north in 1.5 seconds and drives 60 east in 2 seconds, we want to find the average velocity.
average velocity is 19.2 m/s
Solution
The expression for Average velocity is
Average velocity = Total Displacement/ Total time Taken...............Eqn 1
Total Displacement = √(30²+60²) = √4500 = 67.08 m
Total time = 1.5+2 = 3.5 s.
From the Equation 1
Average Velocity = 67.08/3.5
V = 19.2 m/s.
Therefore, the average velocity is 19.2 m/s
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Please help me, I beg you
Answer:
40g
Explanation:
Solubility of Copper sulfate at 90°=60g
Solubility of potassium bromide at 90°=100g
100g-60g=40g
what affects the strength of an electric field? FOR SCIENCE
Answer:
The electric field strength is dependent upon the quantity of charge on the source charge (Q) and the distance of separation (d) from the source charge.
A student pulls out his or her chair in order to sit down. The student pulls the chair 0.75 m with a force of 20 N. How much work does he or she do on the chair?
What can astronomical objects that have changing magnetic fields do
Answer:
During an excursion or a reversal, the magnetic field is considerably weakened and allows many more cosmic rays to reach the surface of the planet. These energetic particles from space can be damaging to life on Earth if too many reach the surface.
Explanation:
Radio waves may generate astronomical bodies with fluctuating magnetic fields. A further explanation is below.
Electrical charges nanoparticles, as well as molecules, moved via the circular or spiraling route of the magnetic fields. Somewhat on windsurfing spacecraft, various radio astronomy or communications tools named WAVES documented as well as captured a day of explosions of something like the Sun's chromosphere as well as the electromagnetic radiation of our observable universe.
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True or False: Radio waves are the longest and have the least energy of any wave.
Answer:
t
Explanation:
Answer:
imma say tru but i might be wrong
how can you show that an electric current has a magnet affect
Answer:
It is observed that when a compass is brought near a current carrying conductor the needle of compass gets deflected because of flow of electricity. This shows that electric current produces a magnetic effect.
How many planets are there in our System? List them all.
Answer:
Eight planets.
1. Mercury
2. Venus
3. Earth
4. Mars
5. Jupiter
6. Saturn
7. Uranus
8. Neptune
Please help Solve! I need help!
Question:
Jermaine runs exactly 2 laps around a 400-meter track. What is the displacement?
Multiple choice answers (I need help I don't understand I don't know what the answer is PLEASE HELP ME):
a. 200
b. 800
c. 400
d. 0
D
Explanation
Given,
Distance covered in 1 lap = 400m
= Distance covered in 2 laps = 400 × 2
=800m
If Jermaine runs 2 whole laps, she comes back to her starting point.
So the answer is 0m
Hola!!!
what is meant by Multiverse???
.
.
.
.
.
.
.
anyone here??
Explanation:
group of multiple universes
these universes comprise everything that exists: the entirety of space, time, matter, energy, information, and the physical laws and constants that describe them.
1.Una partícula de masa m = 0.2 [kg] está unido a dos resortes idénticos (de longitud L = 1.2 [m]) sobre la parte superior de una mesa horizontal sin fricción. Los dos resortes tienen la misma constante elástica de K = 40 [N/m] y cada uno esta inicialmente en su posición de equilibrio (punto O). Si la partícula se hala una distancia d = 0.5 [m] hacia la derecha y después se suelta (ver figura), ¿cuál es la velocidad cuando pasa por el punto O (posición de equilibrio)?
Answer:
walang kuwento
Explanation:
kasi ma answer ko
If a microwave oven is rated at 2400 watts and it is connected at a 120 volt
outlet, how much current does it use?
A. 2280 amps
B. 0.05 amps
C. 20 amps
D. 288,000 amps
Please answer this ASAP
Answer:
c. 20 amps.
just divide the watts by the volts
one newton force is the force needed to cause a
Answer:
mass of 1 kilogram to move with an acceleration of 1 m/s².
Se calienta para templar y endurecer, una llave española de acero de 200 gramos, elevando su temperatura hasta los 550°C y se introduce dentro de un recipiente de aluminio de 250 gramos de masa que contiene 220 gramos de agua. A 18°C. Determinar la temperatura final, cuando se alcanza el equilibrio térmico. Considere El CeHierro= 0.499cal/g°C; CeAluminio= 0.217cal/g°C; Ce agua=1cal/g°C
Answer:
La temperatura final es de aproximadamente 159,94°C
Explanation:
Los parámetros dados son;
La masa de la llave española de acero, m₁ = 200 gramos
La temperatura de la llave, T₁ = 550 ° C
La masa del recipiente de aluminio que contiene agua, m₂ = 250 gramos
La masa del agua en el recipiente de aluminio, m₃ = 220 gramos
La capacidad calorífica específica del hierro, [tex]C_{planchar}[/tex], c₁ = 0.499 ca/(g·°C)
La capacidad calorífica específica del aluminio, [tex]C_{Aluminio}[/tex], c₂ = 0.217 cal/(g·°C)
La capacidad calorífica específica del agua, [tex]C_{Agua}[/tex], c₃= 1 cal/(g·°C)
En equilibrio térmico, tenemos;
m₁·c₁·(T₁ - T) = m₂·c₂·(T -T₂) + m₃·c₃·(T - T₂)
Conectando los valores, da;
200 × 0.499 × (550 - T) = 250 × 0.217 × (T -18) + 220 × 1 × (T - 18)
Simplificando, usando una calculadora gráfica, obtenemos;
[tex]\dfrac{274450-499\cdot T}{5} = \dfrac{1097 \cdot T-19746}{4}[/tex]
De también encontramos 'T' al convertirlo en el tema de la ecuación anterior aún usando una calculadora gráfica;
T = 1196530/7481 °C ≈ 159.94°C
La temperatura final,T ≈ 159.94°C.
The final temperature, when thermal equilibrium is reached is 144°C.
Given the following data:
Mass of key = 200 gramsFinal temperature of key = 550°CMass of aluminum = 250 gramsMass of water = 220 gramsInitial temperature of water = 18°CSpecific heat capacity of key = 0.499 cal/g°CSpecific heat capacity of aluminum = 0.217 cal/g°CSpecific heat capacity of water = 1 cal/g°CTo determine the final temperature, when thermal equilibrium is reached:
Mathematically, heat capacity or quantity of heat is given by the formula;
[tex]Q = mc\theta[/tex]
Where:
Q represents the quantity of heat.m represents the mass of an object.c represents the specific heat capacity.∅ represents the change in temperature.At an equilibrium state, the quantity of heat for the three substances is given by the equation:
[tex]M_kC_k(\theta_2 - \theta_1) = M_aC_a(\theta_2 - \theta_1) + M_wC_w(\theta_2 - \theta_1)\\\\200 \times 0.499 \times (500 - \theta_2) = 250 \times 0.217 \times (\theta_2 - 18) + 220 \times 1 \times (\theta_2 - 18)\\\\99.8(500 - \theta_2) = 54.25(\theta_2 - 18) + 220(\theta_2 - 18)\\\\49900 -99.8\theta_2 = 54.25\theta_2 - 976.5 + 220\theta_2 - 3960\\\\220\theta_2 + 99.8\theta_2 + 54.25\theta_2 = 49900 + 3960\\\\374.05\theta_2 = 53860\\\\\theta_2 = \frac{53860}{374.05}[/tex]
Final temperature, [tex]\theta_2[/tex] = 143.99 ≈ 144°C
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Anything that is thrown or shot through the air is called a projectile. A baseball
player in the outfield throws a ball to home plate. What type of path does the projectile follow?
F. a straight line
G. a curved path upwards
H. a curved path downwards
J. a straight line downwards
Answer:
A curve path downwards
Explanation:
When the ball is thrown, it curves downwards because the earth's core is pulling it out of the sky, and alse becasue the earth is round.
Answer:
H. a curved path downwards
Explanation:
(FOR SCIENCE)fill in the blank with the words ok the top!!!!!
What three factors affect the acceleration of an object?
Explanation:
The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased
The three factors are net force, the mass of the object and the direction of the force.
What is acceleration?Acceleration is defined as the rate of change of velocity. It is also defined as the ratio of the net force acting on the body to the mass of the body.
The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. and the direction of the force.
As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased.
Therefore three factors are net force, the mass of the object and the direction of the force.
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26. How many covalent bonds does water have?
a.1 b.2 c.3 d.4 e.5
Answer:
(b) 2
Explanation:
How bones do humans have ??
Answer:
206
Explanation:
The axial skeleton, comprising the spine, chest and head, contains 80 bones. The appendicular skeleton, comprising the arms and legs, including the shoulder and pelvic girdles, contains 126 bones, bringing the total for the entire skeleton to 206 bones.
A fully grown adult features 26 bones in the spine, whereas a child can have 34.
Answer:
The human body is made up of 206 bones
Which of these actions does NOT have a vector?
O Swinging from a wire
O Drilling a hole
O Kickig a soccer ball
O Looking to the right
Which best describes the runners? Garreth and Elisa ran the same distance but not the same displacement, Luigi and Jasmine went the same displacement, and Logan ran faster than Jasmine. Garreth ran farther than Luigi, Elisa and Jasmine went the same distance, and Logan and Jasmine has the same displacement in the opposite direction. Garreth and Elisa ran together, Luigi and Jasmine went the same distance, and Logan and Jasmine have the same displacement in the opposite direction. Garreth ran less than Logan, Elisa and Jasmine went the same displacement, and Luigi and Garreth ran together.
Answer:
The anwser is C, Garreth and Elisa ran together, Luigi and Jasmine went the same distance, and Logan and Jasmine have the same displacement in the opposite direction.
Explanation:
i just took the test and got 100%
Answer:
C or Garreth and Elisa ran together, Luigi and Jasmine went the same distance, and Logan and Jasmine have the same displacement in the opposite direction.
Explanation:
PLS ANSWERR THIS QUESTION FOR ME !!
Explanation:
20 joule is your answer
Answer:
here
mass m =100kg
distance d=50m
acceleration due to gravity a =10m/s²
work =force×displacement
= ma/d=100×10/50=20joule
Un automóvil viaja a la velocidad de 10 m/s. Se acelera Durante 12s y aumenta su velocidad hasta 70 m/s ¿Que aceleración experimenta el automóvil?
Answer:
Aceleracion = 5 m/s²
Explanation:
Dados los siguientes datos;
Velocidad inicial = 10 m/s
Velocidad final = 70 m/s
Tiempo, t = 12 segundos
Para encontrar la aceleración;
Aceleración se puede definir como la tasa de cambio de la velocidad de un objeto con respecto al tiempo.
Esto simplemente significa que la aceleración viene dada por la resta de la velocidad inicial de la velocidad final a lo largo del tiempo.
Por lo tanto, si restamos la velocidad inicial de la velocidad final y la dividimos por el tiempo, podemos calcular la aceleración de un objeto. Matemáticamente, la aceleración viene dada por la fórmula;
[tex] Aceleracion = \frac{final \; velocidad - inicial \; velocidad}{tiempo}[/tex]
Sustituyendo en la fórmula, tenemos;
[tex] Aceleracion = \frac{70 - 10}{12}[/tex]
[tex] Aceleracion = \frac{60}{12}[/tex]
Aceleracion = 5 m/s²
The diagram shows a skydiver at different points of her jump. At what point would her
acceleration be greatest?
A.
B.
C.
D.
Question 1 and 2 and 3 physics lesson homework
Answer:
Jackson 2: Smart 3: Ahmed
Explanation:
square + circle = egg
oops, wrong guy
Doubling the loudness of a sound wave requires the intensity to
by a factor of
A) increase, two
B)
decrease, two
C
increase, ten
D
decrease, ten
Answer: C. Increase, ten
Explanation: A doubling of the sensed volume (loudness) is equivalent to a level change approximately between 6 dB and 10 dB.
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What happens to the force between two charges when each charge is doubled and the distance between them is 1/4 its original
magnitude?
Answer:
F' = 64 F
Explanation:
The electric force between charges is given by :
[tex]F=\dfrac{kq_1q_2}{r^2}[/tex]
Where
q₁ and q₂ are charges
r is the distance between charges
When each charge is doubled and the distance between them is 1/4 its original magnitude such that,
q₁' = 2q₁, q₂' = 2q₂ and r' = (r/4)
New force,
[tex]F'=\dfrac{kq_1'q_2'}{r'^2}[/tex]
Apply new values,
[tex]F'=\dfrac{k\times 2q_1\times 2q_2}{(\dfrac{r}{4})^2}\\\\=\dfrac{k\times 4q_1q_2}{\dfrac{r^2}{16}}\\\\=64\times \dfrac{kq_1q_2}{r^2}\\\\=64F[/tex]
So, the new force becomes 64 times the initial force.
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why is water poor conductor of heat but food conductor of electricity? pls explain
Explanation:
water contains dissolved salts which can create ions
Answer:
Water is a poor conductor of heat: Most of the heat will move in a convection current within the water at the top of the test tube, only a small fraction of it will conduct down to the ice cube.
Water doesn't need to have a large amount of impurities to act as a good conductor of electricity; even a small amount of ions can enable a source of water to conduct electric current. In a nutshell, water is able to conduct electricity due to the dissolved ions and impurities within it.