Answer:
100J
Explanation:
Kinetic energy=1/2mv^2
Kinetic energy=(1/2 x 8)x5^2
Kinetic energy=4x25
Kinetic energy=100
100J
Answer:
normal force = 10 N
Explanation:
Given data
frictional force = 0.400 N
coefficient of kinetic friction = 0.04
Solution
we get here normal force that is express as
normal force = ............1
put here value and we will get value
normal force =
solve it we get
normal force = 10 N
Answer:
Your answer should be B.
If your internal energy or <em><u>heat</u></em> of a system <em><u>decreases</u></em> then you know that you are taking that energy out and doing <em><u>work.</u></em>
<span>c. the atmosphere, the biosphere and the water cycle</span>
Answer:
B. 7.6 km/s
Explanation:
Given:
Speed of the satellite orbiting Earth is,
In order to convert the speed from miles/hour to km/s, we need to convert miles to km and hour to seconds.
The conversion factors are:
0.62 miles = 1 km
∴ 1 mile =
1 hour = 3600 s
Now, 17000 miles/hour can be rewritten as:
Therefore, the speed in km/s is 7.6 km/s.