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A student has built a 20-cm-long pinhole camera for a science fair project. She wants to photograph the Washington Monument, which is 167 {\rm m} (550 {\rm ft}) tall, and to have the image on the film be 5.0 {\rm cm} high. How far should she stand from the Washington Monument?
Two crates, of mass 75 kg and 105 kg, are in contact and at rest on a horizontal surface. A 732 N force is exerted on the 75.00 kg crate.
The work done in accelerating a flywheel from rest to an angular speed of 14.8 revolutions per second is 12.4 kJ. What is the moment of inertia of the flywheel
According to Kepler's third law, the orbital period T of a planet is related to the radius R of its orbit by T2 R3. What is the planet's orbital period
If the ball is released from rest at a height of 0.91 above the bottom of the track on the no-slip side, what is its angular speed when it is on the frictionless side of the track? suppose the ball is a solid sphere of radius 3.7 and mass 0.14.
A pitcher throws a 0.140-kg baseball, and it approaches the bat at a speed of 50m/s. The bat does Wnc = 70J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 25.0 m abo..
Determine the absolute pressure at the bottom of a lake that is 50 m deep. Write yor answer correct to two decimal paces let Patm = 101,300 Pa
Is kinetic energy consumed in the third type of collision studies? Classify the three collision kinds as elastic, inelastic, or completely inelastic.
A rectangular container measuring 26 cm 47 cm 59 cm is filled with water. What is the mass of this volume of water in kilograms and grams.
A soccer player kicks a ball that is on the ground down the field. The balls initial velocity is 10 m/s, 30 degrees above the horizontal. How long does is take for the ball to land down the field
When the cannon is fired, the ball moves 15.3 cm through the horizontal barrel of the cannon, and there is a constant frictional force of 0.0322 N between the barrel and the ball. Illustrate at what point does it have its max speed?
What is frequency of the fork
A loop of wire in the shape of a rectangle rotates with a frequency of 162 rotation per minute in an applied magnetic field of magnitude 3 T, Find the maximum current through the bulb
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