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A model rocket is fired vertically from rest. It has a net acceleration of 17.0 m/s2. After 1.3 s, its fuel is exhausted and its only acceleration is that due to gravity.
(a) Ignoring air resistance, how high does the rocket travel?
(b) How long after liftoff does the rocket return to the ground?
q1. imagine a free electron and a free proton held midway between the plates of a charged equivalent plate capacitor.
A uniform rod of mass 3.05×10^-2?2kg and length 0.370m rotates in a horizontal plane about a fixed axis through its center, compute the angular speed of the rod after the rings leave it
You are flying to New York. You've been reading the in-flight magazine, which has an article about the physics of flying. What is the diameter of the airplane's path around the airport
A loudspeaker at a rock concert generates 10-2 W/m2 at 22.0 m at a frequency of 1.0 kHz. Assume that the speaker spreads its energy uniformly in three dimensions. What is the total acoustic power output of the speaker
A ball is thrown horizontally off the top of a building with a height of h=22.5m. What is the horizontal distance the ball travels before it hits the ground
The flywheel of an old steam engine is a solid homogeneous metal disk of mass M = 131 kg and radius R = 80.5 cm. Calculate the work done by the torque during this time
Light of a wavelength 450 nm is incident on a sodium emitter in a photoelectric effect apparatus. Sodium is 2.3 eV, What is the stopping potential for the emitted electrons
A 4mC charge passes through the point (3m, 4m) at a speed of 100m/s. Find the components of the magnetic force felt by the charge
A long string carries a wave; a 4.00-m segment of the string contains four complete wavelengths and has a mass of 180 g. Determine the power being supplied to the string
The Voyager I spacecraft moves through interstellar space with a speed of 7400m/s. Assuming that the 5.6-m long antenna on the spacecraft is at right angles to the magnetic field, find the induced emf between its ends
It is believed that the universe began with a big bang about 17 billion years ago. If the speed of light is 2.99792 × 10^8, what is the maximum possible radius of the observable universe
Suppose an ideal monatomic gas at an initial temperature of 475 K is compressed from 3.20 L to 2.15 L while its pressure remains constant at 1.01 105 Pa. Find the work done on the gas.
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