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To water the yard, you use a hose with a diameter of 3.2 cm. Water flows from the hose with a speed of 1.5 m/s. If you partially block the end of the hose so the effective diameter is now 0.67 cm, with what speed does water spray from the hose? v=?
Two identical conducting spheres each having a radius of 0.500 cm are connected with a light 2.40 m long conducting wire. A charge of 66.0 µC is placed on one of the conductors. Suppose the surface distribution of charge on each sphere is uniform. De..
Astronauts put their spaceship into orbit about a planet. Theyfind that the acceleration of gravity at their orbital altitude isone fourth that at the planet's surface. How far above the planet'ssurface are they orbiting? Answer in terms of the pl..
A tee consisting of two thin rods each having a mass of M and with lengths L1 and L2, Find the rotational velocity of the tee-clay ball combination just after the collision
An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. Find the size and the nature of the image
After emptying her lung, a person inhales 4.1 L of air at 0.0 oC and holds her breath. How much does the volume of the air increase
A spherically spreading EM wave has an average intensity of 570 mW/m2 at a point 9.5 m away from the source. What is the rms value of the electric field
The Hoover Dam is 220 meters high and the pressure at the bottom of the dam is 2.2 million Pascals. What is the pressure at 55 meters from the surface in million Pascals
A block of mass m = 600 g is released from rest and slides down a frictionless track of height h = 59.9 cm. What is the value of the spring constant k
Modern vacuum pumps make it easy to attain pressures of the order of in the laboratory. Consider a volume of air and treat the air as an ideal gas. At a pressure of and an ordinary temperature of 300.0 K, how many molecules are present in a volume ..
A 800kg , light-weight helicopter ascends from the ground with an acceleration of 3.50m/s2. What is the work done by the gravitational force
A 25.0g bullet moving at 900 m/s is fired through a 0.900 kg block of wood emerging at a speed of 100 m/s. what is the resulting speed
a hockey puck moving at 8.0 ms coasts to a halt in 75m on a smooth ice surface. what s the coefficient of friction of
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