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A projectile is fired horizontally from a gun that is 52.0 m above flat ground. The muzzle velocity is 215 m/s. How long does the projectile remain in the air?
At what horizontal distance from the firing point does it strike the ground?
What is its speed as it strikes the ground?
A 400lb woman stands on a floor in flat soled shoes. A 130lb woman stands on the same floor in a high heel shoe with all her weight is on the heel of the shoe. Which person is more likely to dent the floor?
A mass m attached to a spring with constant k (N/m).
In order to study the long-term effects of weightlessness, astronauts in space must be weighed (or at least "massed"). Find the mass of the astronaut
The floor received most of the collision energy and the force of the ball on the floor is upwards.
2.50 kg block slides down the inclined plane at a 20.0degree angle as shown below. Calculte the work done by the force of friction
Electromagnetic waves (light) can form standing waves. In a certain standing wave pattern formed by microwaves, What is the microwave frequency
At a rock concert, a dB meter registered126dB when placed 2.8m in front of a loudspeaker on the stage. What was the power output of the speaker
Suppose you want a capacitor bank with a total capacitance of 1.450 F and you possess numerous 2.50 mF capacitors. What is the smallest number you could hook together to achieve your goal
As a result of the friction between their surfaces, after a while, both disks spin at the similar angular speed. Determine the work done by the frictional torque.
A 5.8 box is on a frictionless 39 slope and is connected via a massless string over a massless, frictionless pulley to a hanging 1.9 weight. Illustrate what is the tension in the string once the box begins to move?
Three point charges, -6.05 10-9 C, -9.40 10-9 C, and +7.25 10-9 C, are fixed at different positions on a circle. What is the radius of the circle
A 4.20-g bullet embeds itself in a 20.0-kg block, which is attached to a horizontal spring with a force constant of 950 N/m. find the speed of the bullet just before it hits the block
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