Answer:
B. 560 J
J. 1.2 m
Explanation:
v = Final velocity = 0
u = Initial velocity = 4 m/s
= Coefficient of friction = 0.7
m = Mass of runner = 70 kg
g = Acceleration due to gravity =
Kinetic energy is given by
The mechanical energy lost is 560 J
Acceleration is given by
From kinematic equations we get
The runner slides for 1.2 m
Answer:
Light waves
Explanation:
The light in the only wave can travel in the empty space.
Answer:
No concave lens cannot be used to make hand lens because in hand Lens we use convex lens so as to converge the rays of the light After refraction and helps to produce a magnified image of an object.
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B) using a blood pressure monitor to find a patient's blood pressure.
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Answer:
1.43602666666666666666666666666666666666666666666666666 × 10^9 Miles^3
Explanation:
It's the volume of a sphere of radius 1700 miles.
Vol=4pi*r^3/3
V=4/3*3.14*1700^6 = 1.43602666666666666666666666666666666666666666666666666 × 10^9 MI^3