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Jon is standing outside the physics laboratory 7 meters from the wall. Peter, by a window 5 meters above the ground, tosses a ball horizontally. Find the speed that Peter should give the ball for it to reach Jon?
A beam is attached to a vertical wall with a hinge so that the beam can be supported horizontally with a wire and a sign can hang below. What is the tension in the wire holding the sign
A flat uniform circular disk (radius = 5.00 m, mass = 390 kg) isinitially stationary. Find the resulting angular speed(in rad/s) of the disk
A particle of mass ,m, is at rest at the end of a spring(force constant=k)hanging from a fixed support. At t=0 a constant downward forcd F is applied to the mass and acts for a time T. Show that after the force is removed, the displacement of the ..
A block of mass 4.6 kg slides 15 m from rest down an inclined plane making an angle of 28 o with the horizontal. what is the retarding force due to friction
A dolphin locatedin sea water at a temperature of 25°C emits a sound directedtoward the bottom of the ocean 200 mbelow. How much time passes before it hears an echo
A capacitor is a device used in a variety of electronic circuits. In a simple design a capacitor consists of two parallel metal plates of area A separated by a distance d. When the plates are connected to the positive and negative terminals of a b..
An electric power station is producing 1 x 10+3 W of power that is to be sent to a small town located 11 km away. Eachof the two wires that comprise the transmission line has aresistance per kilometer of length of 4 x 10-2 Ohms /km.
the plane of a rectangular coil 4.0 cm by 7.0 cm is perpendicular to the direction of a magnetic field . if the coil
Suppose a cannonball is fired into the air with an initial velocity of 35.0 m/s at an angle 32? above the horizontal. Ignore the effects of air friction. How far from the cannon will the second "half" land
A 66.0 kg person throws a 0.0410kg snowball forward with a ground speed of 25.0 m/s. A second person, with a mass of 57kg, catches the snowball.
While on vacation a tourist left the center of town in a rented car having an odometer reading of 26725.10 km. He traveled south of west of 6.00 h and then swung northeast for 14.0 h, ending up 420 km due east of the center of town. At that point ..
An ideal monatomic gas initially has a temperature of 330 K and a pressure of 7.00 atm. It is to expand from volume 530 cm3 to volume 1600 cm3. what are the final pressure and the work done by the gas
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