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dusya [7]
2 years ago
15

A refrigerator has a mass of 88 kg. What is the weight of the refrigerator?

Physics
1 answer:
posledela2 years ago
6 0

Answer:

I don't think the information is complete

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A pirate ship shoots a cannon towards an oncoming ship. The cannon ball has a mass of 25 kg and the ship has a mass of 2500 kg.
mars1129 [50]

Answer:

25 m/s in the opposite direction with the ship recoil velocity.

Explanation:

Assume the ship recoil velocity and velocity of the cannon ball aligns. By the law of momentum conservation, the momentum is conserved before and after the shooting. Before the shooting, the total momentum is 0 due to system is at rest. Therefore, the total momentum after the shooting must also be 0:

m_sv_s + m_bv_b = 0

where m_s = 2500 kg, m_b = 25 kg are masses of the ship and ball respectively. v_s = 0.25 m/s, v_b are the velocities of the ship and ball respectively, after the shooting.

2500*0.25 + 25*v_b = 0

25v_b = -2500*0.25

v_b = -2500*0.25/25 = -25 m/s

So the cannon ball has a velocity of 25 m/s in the opposite direction with the ship recoil velocity.

3 0
3 years ago
a bus takes to reach from station A to station B and then 3 hour to return from station B to station A find the average velocity
Anton [14]

Answer:

you have probably missed some details in the question.

3 0
3 years ago
Why do you think spacecraft that carry instruments to collect data about objects in space are called probes?
yarga [219]

Answer:

my mind cant comprehend a shing word u just said

Explanation:

3 0
2 years ago
Read 2 more answers
A box weighing 200N is pushed on a horizontal floor. What acceleration will result if a horizontal force of 100N is applied on t
Bogdan [553]

Answer:

the friction force in the reverse direction is 200 *0.4=80 N.

the net forward force acting on the box is therefore

Fnet= 100 - 80  N

= 20 N

acceleration = Fnet / mass

=Fnet *g/(weight)

=20 *9.8/200 = 0.98 m/s^2

Explanation:

4 0
3 years ago
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We can use energy principles to make ____ predictions.
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Compatible and speedy
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