Answer:0.748 gm
Explanation:
Given
mass of block =30 kg
initial velocity=6.1 m/s
Final velocity=4.5 m/s
Change in kinetic Energy

Change in kinetic energy =heat generated by friction=heat absorbed by ice


m=0.748 gm
Albert Einstein, in his theory of special relativity, determined that the laws of physics are the same for all non-accelerating observers, and he showed that the speed of light within a vacuum is the same no matter the speed at which an observer travels
The Short Answer: Earth’s tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun’s most direct rays. So, when the North Pole tilts toward the Sun, it’s summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it’s winter in the Northern Hemisphere.
Answer: question 1 , would be one question 2 , would be 1 joule and number three would be number one and number four would be , power and last one would be, number two
Explanation: sorry if its wrong
For 1000 seconds , a current of 0.1 A flows so as to transfer charge of 100C