Answer:
a. tension of the cable attached to chair = 2.77kN
b. speed of the chair = 10.38m/s
Explanation:
A. tension of the cable is calculated by mass of the chair multiply by gravitational acceleration.
Tension(T) = m*g
where, m= 283kg
length of cable = 11m
and g=9.8m/s2
tension = mg = 283*9.8
=2773.4 N = 2.77kN
b. speed of the chair =
= 10.38m/s
Answer:
The Difference between Radio Waves and Infrared Light. According to NASA, radio waves have a longer wavelength than infrared light, in the electromagnetic spectrum. Radio waves are able to reach the earth’s surface, unlike most infrared light.
Explanation:
I hope this helps.
Answer:
Answered
Explanation:
By the law of conservation of the momentum The car-bug system moment will remain the same before and after the collision. And since the mass of the car is much higher than the bug, the change in velocity of the car will be negligible as compared to the change in velocity of the bug and hence the change in momentum of the bug will be very large and change in momentum of the car will be negligible.
Answer:
I know 1, that is in the case of a burning of a candle.
Explanation:
Answer:
50
Explanation:
The mechanical advantage of a machine is given by
where
is the output force
is the input force
For the crowbar in this problem,
is the force in input applied by the worker
is the force that the machine must apply in output to overcome the resistance of the window and to open it
Substituting into the equation, we find