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A 1,500kg satellite is placed in an orbit 8,000km above the surface of the Earth.
a. What is the gravitational acceleration of the Earth at that altitude?
b. What is the speed of the satellite?
c. How long does it take the satellite to go around the Earth?
To protect their young in the nest, peregrine falcons will fly into birds of prey (such as ravens) at high speed. What was the raven's speed right after the collision
Two identical machines are positioned the same distance from a worker. The intensity of sound delivered by each machine at the location of the worker is 2.0x10-7 W/m2. Find the sound level heard by the worker
A model rocket blasts off and moves upward with an acceleration of 11m/s^2 until it reaches a height of 28m, What is the maximum height attained by the rocket
A jet is circling an airport control tower at a distance of 16km. An observer in the tower watches the jet cross in front of the moon. As seen from the tower, the moon subtends an angle of 9.50x10-3 radians. Find out the distance traveled (in mete..
A 0.7 kW heater is designed to operate at 210 V. Assume that its resistance is constant. What is the power dissipated in this resistor if it operates at 120 V
A van der Waals gas undergoes an isothermal expansion from specific volume v1 to specific volume v2. Calculate the change in the specific Helmholtz function for this process.
A microwave radio transmitter emits electromagnetic waves of a single wavelength. What is the power of the transmitter
You have the urge to connect to nature and become a hunter who uses a slingshot. You make a slingshot from a 50cm long piece of rope in which you put a m=50 g stone, How long is the stone in the air
A tungsten light bulb filament has a surface area of 2.6*10-5 m2 and is maintained at a temperature of2.5*103 oC. Calculate the rate of energyradiation from the filament. Assume an emissivity of 0.240 and takethe temperature of the surroundings to ..
A 2.00 kg sphere is rotating about an axis through its center at 40.0 rev/s with the angular velocity in the +z direction. find the rate of change of the angular momentum of the sphere
Bob, of mass m, drops from a tree limb at the same time that Esther, also of mass m, begins her descent down a frictionless slide. If they both start at the same height above the ground, which is true about their kinetic energies as they reach the gr..
A small bulb is rated at 7.5 W when operated at 125 V. The tungsten filament has a temperature coefficient of resistivity a = 4.5 ? 10-3 / °C. What is the resistance of the filament (in ohms) at room temperature
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