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Pavlova-9 [17]
3 years ago
5

Match the term to the RIGHT definition

Physics
2 answers:
irina1246 [14]3 years ago
7 0

Answer:

Earth = A liquid water covers

Mars = B iron oxide causes

Mercury = D is rocky planet

Venus = C has the hottest

Explanation:

Levart [38]3 years ago
4 0
Earth = A
Mars = B
Mercury = D
Venus = C
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Can a conductor be given limitless charge
k0ka [10]

Answer:

No

Explanation:

You could try to give it enough to fill all valence electrons in all of the atoms in the conductor, but practically this could not be achieved.

5 0
3 years ago
A 1569 kg car moves with a velocity of 15 m/s. What is its kinetic energy? Joules
Crank
Kinetic energy = 1/2 * mass * velocity^2

In this case,
KE = 1/2 * 1569 kg * (15 (m/s))^2 = 176,5 kN
8 0
3 years ago
An object travels 5m/s in 2 seconds. How far did it travel?​
s2008m [1.1K]

Answer:

10 m

Explanation:

5  m/s   *   2 s = 10 meters     ( see how the  ' s '  cancels out?)

5 0
1 year ago
Read 2 more answers
If Superman wants to slow down a fast car with speed 20 m/s and mass 1000 kg, how much force in N does he need to apply if he wa
saveliy_v [14]

Answer:

Force of 6250N is required to slow down the body to zero.

Explanation:

Speed(V)=20m/s

Initial speed (u) =0m/s

Mass(M)=1000kg

Time(t)=3.2seconds

Using first equation of motion to find the acceleration of the body:

V=U + at

20m/s=0 + a*3.2s

Therefore, a=(20m/s)/3.2s

a=6.25m/s^2

To find the force required to stop the body or get it down to zero:

Force(F)=mass x acceleration

F=(1000kg)*(6.25m/s^2)

F=6250N.

Therefore a force of 6250N is required to slow it down.

8 0
3 years ago
When a 0.058 kg tennis ball is served, it accelerates from rest to a speed of 45.0 m/s. The impact with the racket gives the bal
AURORKA [14]

Answer:

Explanation:

Note : the questions do not come in the right order.

Data:

Mass = 0.0518kg

Velocity = 45 m / s

Distance (s) = 0.44m

C) what's the acceleration on the ball?

Using equation of motion,

V² = u² + 2as

V² - u² = 2as

a = (v² - u²) / 2s

a = (45² - 0) / 2 * 0.44 [the ball was at rest]

a = 2025 / 0.88

a = 2301.136m/s²

D) The net force on the ball?

Force = mass * acceleration

F = m*a

F = 0.0518 * 2301.136

F = 119.199N

The force acting on the ball was 133.465N

F = 133.47N

b) time period the ball was struck.

From the relationship between impulse and momentum,

Ft = m * v

133.47 * t = 0.058 * 45

t = 2.61 / 133.47

t = 0.01955s

a) average velocity (V) = total distance covered / total time taken

V = s / t

V = 0.44 / 0.01955

V = 22.50m/s.

e) if the ball was heavier and still experienced the same velocity, the applied would've been lesser than before.

4 0
4 years ago
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