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Problem: Suppose that a 70 kg skydiver in free fall has reached terminal velocity and is falling at a speed of 33 m/s. The skydiver gains energy at a certain rate due to gravity, and then gets rid of that energy at the same rate by heating the air due to air resistance.
Part A: What is the power the skydiver supplies to the air to heat it up as the skydiver falls?
I need help to find the power the skydiver supplies to the air to heat it up as the skydiver falls.
The system is released from rest, and the string moves without slipping over pulley. If the larger mass is traveling at a velocity of 2.25 m/s when it has dropped 1m, how much mechanical energy was lost due to friction in the pulley's axle.
A car is being pulled out of the mud by two forces that are applied by the two ropes shown in the drawing. The dashed line in the drawing bisects the 30.0° angle. The magnitude of the force applied by each rope is 2900 newtons (N).
What is the resultant velocity of the motor boat. What distance downstream does the boat reach opposite shore.
An object 4.0 cm high is placed 12 cm in front of a diverginglens that has a focal length of – 8.0 cm. Describe by calculation the location, nature (real or virtual andupright or inverted), and size of the image for this location.
A boy with a mass of 45 kg is hangingfrom a spring with a spring constant of 180 N/m. With what frequency does the boy bounce up and down
q1. a planet of mass 6.00 1025 kg is in a circular orbit of radius 2.00 1011 m around a star. the star exerts a force
A 0.250-kilogram cup at 15 °C is filled with 0.100 kg of boiling coffee. The cup and the coffee come to thermal equilibrium at 75 °C. what is the specific heat of the cup material
What temperature would the oxygen molecule have to be to have the same energy as the above photons
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 60.0?. Dog A exerts a force of 272N , and dog B exerts a force of 346N. Find the magnitude of the resultant force
A generator can be made using the component of Earth's magnetic field that is parallel to Earth's surface. Compute the maximum emf induced in the coil by Earth magnetic field
A thermos contains 156 cm3 of coffee at 87.6 °C. To cool the coffee, you drop two 11.5-g ice cubes into the thermos. What is the final temperature of the coffee in degrees Celsius
a battery has an internal resistance of 1.3 omega and a voltage of 48 v. what is the load resistance which causes the
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