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3 years ago

The Apollo 11 mission was the first mission to land a human on the moon.

Physics

1 answer:

wel3 years ago

7 0

1.true
2.true a habitable artificial satellite
3.false

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If a ball is rolling in a straight line and you push it to the right its velocity will to the right

Keith_Richards [23]

The answer would be "velocity will stay in the same direction." Since the ball is going in the same the ball is still going straight but just right. Many people get confused over velocity and speed, speed it the average amount on how fast a object is going and velocity is the amount of force a object has when it has speed. So, in this case since how the ball is going straight but just right it would stay in the same direction.

Hope this helps!

4 0

3 years ago

True or False: Cooler objects always have more thermal energy than warmer objects.

tensa zangetsu [6.8K]

False

Because you can see using a thermal camera I guess

3 0

3 years ago

Earths gravity acts upon objects with a steady force of

slavikrds [6]

Answer:

9.8 m/s²

Explanation:

Earths gravity acts upon objects with a steady force of 9.8 m/s². The force of gravity is attractive in nature. It acts between two objects. It always acts towards the ground. The force off gravity is given by :

F = W = mg

m is mass of the object and g is the acceleration due to gravity. The value of g is 9.8 m/s². Hence, Earth's gravity acts upon objects with a steady force of 9.8 m/s².

5 0

3 years ago

Number of atoms of each element Sodium oxide?

soldi70 [24.7K]

Answer:

There are two sodium atoms for every one oxygen atom in Sodium Oxide.

Explanation:

8 0

2 years ago

Read 2 more answers

A child pulls a block across the floor with force applied by a horizontally held string. A smaller frictional force also acts up

castortr0y [4]

Answer:

work done by tension force is more than the change in kinetic energy of the block

Explanation:

As we know that by work energy theorem we know that

Work done by all forces on the system must be equal to the change in kinetic energy of the system

so here when a block is pulled horizontally by applied tension force on the rope and there exist some frictional force on it

so we can say that net work done on the block must be equal to change in kinetic energy of the system

So we have

$W_f + W_T = \frac{1}{2}m(v_f^2 - v_i^2)$

$W_T - W_f = \Delta K$

so we have

$W_T = W_f + \Delta K$

So here we can see that since work done by frictional force is always negative so work done by tension force is sum of work done by frictional force and change in kinetic energy.

So work done by tension force is more than the change in kinetic energy of the block

7 0

3 years ago