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A cart starts from rest at the top of the tilted track. Assume the track is frictionless. The cart passes photogate A moving at speed3.4cm/s, and passes photogate B moving at speed 8.6cm/s. The dis
In a Newton's rings demonstration using 540-nm light, the distance from the center of the rings to the first bright ring is 0.30 mm. If the bottom piece of glass is flat, what's the curvature radius
A 2.6-kg shere of radius 35cm is intially rolling on a flat surface with a speed of v=.40 m/s. It comes to rest in 80m. Determine the force F and the distance I.
Calculate the rate at which body heat flows out through the clothing of a skier, given the following data. The body surface area is 1.8 m2 and the clothing is 1.0 cm thick; skin surface temperature
A rotating wheel requires 7.00s to rotate 26.0revolutions. Its angular velocity at the end of the 7.00-s interval is99.0rad/s. What is the constant angular acceleration (in rad/s) of the wheel?
A centrifuge in a medical laboratory rotates at an angular speed of 3,500 rev/min. When switched off, it rotates through54.0revolutions before coming to rest. Find the constant angular acceleration
Find (a) the speed of the proton as it enters the region of magnetic field and (b) the radius of the circular path on which the proton moves in the magnetic field.
A copper rod 0.150 m long and with a mass of 0.0500 kg is suspended from two thin, flexible wires. At right angles to the rod is a uniform magnetic field of 0.550 T pointing into the page. Find (a)
A proton is released from rest at the positive plate of a parallel plate capacitor. It crosses the capacitor and reaches the negative plate with a speed of 50,000 m/s/ What will be the final speed
A solenoid is wound with a single layer of insulated copper wire of diameter 2.500 mm and has a diameter of 3.000 cm and is 1.100 m long. Assume that adjacent wires touch and that insulation thickne
An average human DNA molecule contains 5 x 108 base-pairs, each of which could be regarded as a "rung" on the DNA "ladder", and there are four types of base-pairs. If each base-pair were a random c
A person fishing from a pier observes thatsevenwave crests pass by in 6.2s and estimates the distance between two successive crests to be 3.2m.The timing starts with the first crest and ends with th
In being launched from rest it moves through a distance of 53.8 m and has a kinetic energy of 8.71 x 107 J at lift-off. What is the work done on the jet by the catapult?
A vertical right circular cylindrical tank measures 30ft high and 20 ft in diameter. It is full of oil weighing 51.2 lb/ft^3. How much work does it take to pump the oil to the level of the top of th
What is the current's magnitude and direction of the external B-field? What is the current's magnitude and direction flowing through the wire?
In a interference experiment d = 4mm, L = 1m, the second maximum (n = 2) appears on the screen at a distance 4mm from the central maximum (n = 0). What is the wavelength of the light??
Determine the maximum charge on the capacitor. What is the charge remaining on either plate after one time constant has elapsed.
Compute the transmission coefficient for penetration of the barrier for the electrons and the protons?
How long does it take to reach its highest point? What velocity does it have? How far from the base of the cliff does it land; i.e., what's its range?
When inserted into a player, the CD starts from rest and accelerates to an angular velocity of 20.1 rad/s in 0.735 s. Assuming the CD is a uniform solid disk, determine the net torque acting on it.
The two blocks undergo a perfectly inelastic collision. What should the velocity of the red block be in order to have the two blocks move to the right with a speed of 0.40 after the collision?
Calculate the maximum height of the water column that can be supported in this way, and compare with the length of the mercury column in a barometer. This problem illustrates why mercury is used in
Neglecting air resistance, what is the force of friction between the object and the rolling surface? Explain.
A pulley, with a rotational inertia of 4.6 × 10-3 kg m2 about its axle and a radius of 7.0 cm, is acted on by a force applied tangentially at its rim. The force magnitude varies in time as F =