Two bowling balls collide. A red 5 kg bowling ball is traveling with a velocity of 1 m/s to the left. A blue 4 kg bowling ball i
1 answer:
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Answer:
Explanation:
= Permittivity of free space =
= Vacuum permeability =
E = Electric field = 57.5 V/m
c = Speed of light =
Magnetic field is given by
The magnetic field strength is
Energy density is given by
The energy density is
Power flow per unit area is given by
Power flow per unit area is
Answer:
17086
Explanation:
We are given that
Weight=5 kg
Distance of elbow from the weight=d=35 cm=
1 m=100 cm
g=
Work done each time on the weight=
20% means 0.20 of food energy=Work done each time on weight
Total work done in each time=
1 food calorie=4186 J
350 food calories=
Number of lift needed=
Hence, you must do 17086 arm raises to work off 350 food calories.