Answer:
4km/hr
Explanation:
There are 60 minute in an hour. If you divided 60 by 30 minutes you’d get 2. 2x 2km is 4km and 30x 2 is 60/an hour
Answer:
Explanation:
work done=force * displacement
=500 N * 40 m
=2000 joule
Answer:
The body reading on the scale will increase.
Explanation:
The scale reading will definitely increase due to buoyancy of the ball. According to Archimedes' law which states that the magnitude of buoyancy force on the body is the same as the weight of the liquid which is pushed out when submerging the body. Therefore, the body reading on the scale will increase.
Answer:
<h2>14.52 J</h2>
Explanation:
The kinetic energy of an object can be found by using the formula
m is the mass
v is the velocity
From the question we have
We have the final answer as
<h3>14.52 J</h3>
Hope this helps you
Decreasing pressure on a gas will cause its volume to increase, as it isn't being forced into a smaller space. Increasing temperature causes the atoms in the gas to contain more energy, making them move around more. This too increases the volume.
So basically both would increase the volume of the gas. Hope this helps