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A 6100-kg satellite is in a circular earth orbit that has a radius of 2.7x10^7 m. A net external force must act on the satellite to make it change to a circular orbit that has a radius of 5.6x10^6 m. What work must the net external force do?
A child is trying to throw a ball over a fence. She gives the ball an initial speed of 8.0 m/s at an angle of 40° above the horizontal. How far is the child from the fence
A liquid is flowing through a horizontal pipe whose radius is 0.0269 m. The pipe bends straight upward through a height of 7.90 m and joins another horizontal pipe whose radius is 0.0755 m. What volume flow rate will keep the pressures in the two hor..
In all cases the distance d between the charges is the same. The magnitude of the charges is |q|= 1.3 µC, and the distance between them is d = 2.9 mm. Determine the magnitude of the net force on charge 2 for each of the three drawings.
question an electron moves in a 0.5nt b-field. if the radius of the circular orbit is 1cm what is its period angular
What is the rotational kinetic energy of the Earth? Use the moment of inertia you calculated in Part A rather than the actual moment of inertia given in Part B.
A car is travelling at 26 m/s when the driver spots a large pothole in road a distance 34 m ahead. She at once applies her brakes. If her acceleration is -7.5 m/s2, does she manage to stop before reaching the pothole.
An airplane propeller is 2.18 m in length (from tip to tip) with mass 97.0 kg and is rotating at 2600 rpm (rev/min) about an axis through its center. What would its angular speed have to be
A He-Ne laser produces light of wavelength 633 nm with intensity 1.05 103 W/m2, over a beam of cross-sectional area 1.03 mm2. How many photons per second are emitted by the laser
A machine gun fires 25-g bullets at the rate of 4 bullets per second. What is the average recoil force experienced by the machine gun
What is the acceleration of two falling sky divers (mass 116.0 kg including parachute) when the upward force of air resistance is equal to one-fourth of their weight? n?
An 18 mm wide diffraction grating has rulings of 710 lines per mm. What is the largest angle from the normal at which an intensity maximum is formed
Use the worked example above to help you solve this problem. A cylinder contains2.15mol of helium gas at19.0°C. What is the average kinetic energy per molecule
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