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As a space craft approaches a planet, the rocket engines on it are fired to slow it down so it will go into orbit around the planet. The spacecraft's mass is 269 kg and the thrust (force) of the rocket engines is 53 N. If the speed of the spacecraft must be decreased by 120 m/s, how long must the engines be fired?
A 14.5 gram, 78.6 centimeter long steel guitar string is vibrating in its fourth harmonic. What is the tension on the steel guitar 'string'
An air column in a glass tube is open at one end and closed at the other by a movable piston. The air in the tube is warmed above room temperature, and a 356 Hz tuning fork is held at the open end. Resonance is heard when the piston is at a distan..
A converging lens with a focal length of 12.2cmforms a virtual image 8.50mm tall, 16.6cm to the right of the lens. Determine the position of the object
In a double-slit interference experiment, the wavelength is ? = 622 nm, What is the linear distance between the 6th order maximum and the 2nd order maximum on the screen
What is the magnitude of the force of upper leg on the lower leg at the knee joint.
Determine the mass of a 4.6 meter beam, if it is balanced on a fulcrum 2.16 meters from the left end. A 820 N man stands on the very left end
Two coils are close to each other. The first coil carries a time-varying current given by I(t) = (5.80 A) e-0.0250tsin(377 t). What is the mutual inductance of the coils
What mass can it support in water before sinking. Two concentric spherical shells with uniformly distributed masses M1 = kg and M2 = kg are situated as shown . Find out the magnitude Find the magnitude of the net gravitational force on a particle ..
A car is travelling at a constant speed of 31.1 m/s on a highway. At the instant this car passes an entrance ramp, a second car enters the highway from the ramp. The second car starts from rest and has a constant acceleration. What acceleration mu..
After a completely inelastic collision, two objects of the same mass, Find the angle between the initial velocities of the objects
A family ice show is held in an enclosed arena. The skaters perform to music playing at a level of 71.5 dB. What total sound intensity engulfs you
The truck is parked on the platform of a weight scale. Explain by how much does the scale reading exceed the weight of the truck and sand?
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