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Suppose the moon were held in its orbit not by gravity but by the tension in a massless cable. What is the speed of the moon in its orbit about the earth
A 0.14 kg sphere hangs on a string from the ceiling of a car that is accelerating horizontally at a constant rate. What is the magnitude of the net force on the sphere
A bicycle wheel (with very light spokes) of mass M and radius R is mounted on a light axel through its center. Write a statement of conservation of energy for this system
Two masses m1= 1 kg and m2= 2 kg are connected to each other by a massless rope that passes over a pulley with mass mp= 0.5 kg. What is the period (in s) ofsmall oscillations of this system
A 1.5 m long stick with a mass of 0.3 kg is pivoted on a hinge at one end and held horizontally by a spring with spring constant 10 N/m attached at the other end
The temperature near the top of Saturn's cloud layer is about 110K. The temperature at the top of earth's troposphere, at an altitude of about 20km, is about 220K. Calculate the rms speed of hydroge
Two sinusoidal waves of the same frequency travel in the same direction along a string. what is the amplitude (in cm) of the resultant wave
A hunter is standing on flat ground between two vertical cliffs that are directly opposite one another. find the distance (in m) between the cliffs
X rays with a wavelength of 0.18 nm undergo first-order diffraction from a crystal at a 74 degree angle of incidence
A 0.29 F capacitor is desired. What area must the plates have if they are to be separated by a 3.7 mm air gap
At a height of ten meters above the surface of a freshwater lake, a sound pulse is generated. How deep is the lake
An airplane flying at a distance of 10 km from a radio transmitter receives a signal of intensity 8.4 ?W/m2. what is the transmission power
A simple pendulum makes 143 complete oscillations in 2.80 min at a location where g = 9.80 m/s2. Find the period of the pendulum
in a 10ft^2 room wiyh no window and no doors . The air in the room is 79% N(sub2) and 21% O(sub2). What is the weight of the air
A vertical spring with a spring constant of 440 N/m is mounted on the floor. what height (in cm) above the compressed spring was the block dropped
A playground carousel is free to rotate about its center on frictionless bearings, and air resistance is negligible. What is the person's mass
Two disks have equal masses, m, and radii, R. Their moments of inertia are each .5mR^2. find the acceleration of the center of mass of the lower disk
In a mass-spring system, the mass of the object is 80g and the spring constant is 200N/m. What is the period of oscillataions for this system
A 7.6 cm diameter horizontal pipe gradually narrows to 4.8 cm . When water flows through this pipe at a certain rate, What is the largest size vehicle
A scuba diver is 40 m below the surface of a lake, where thetemperature is 5 degrees C. He releases an air bubble with avolume of 15 cm^3. What is the volume of the bubbleright
Find the magnetic force due to a long wire(8.9A) on a square coil (10A) of side 615cm the centre of which is at 10.1cm from the wire
An archer pulls the bowstring back for a distance of 0.470 m before releasing the arrow. What is the elastic potential energy of the drawn bow
A cylinder is rotating about an axis that passes through the center of each circular end piece. The cylinder has a radius of 0.0550 m, Find the magnitude of the angular deceleration of the cylinder
an object with the dimensions 5.64 cm x 2.97 cm x .92 cm has a mass of 11.5 g. at what depth of the bottom end will the object float
A particle of mass 1.67×10-27 kg moves with a speed of 2.3×108 m/s relative to an observer. What is the kinetic energy of the particle in the rest frame