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A pitched ball is hit by a batter at a 45°angle and just clears the outfield fence, 98 m away. If the fence is at the same height as the pitch, find the velocity of the ball when it left the bat. Ignore air resistance.
Two long, parallel wires, each with the mass per unit length of 43 g/m, are supported in a horizontal plane by 6-cm long strings. Each wire carries the similar current, I, causing the wires to repel each other so that the angle, θ, between the sup..
A stunt driver wants to make his car jump over eight cars parked side by side below a horizontal ramp, what is the new minimum speed
On a cold day, 16000 J of heat leaks out of a house. The inside temperature is 20.0° C, What is the increase in the entropy of the universe
A baseball is thrown at an angle of 27 degrees relative to the ground at a speed of 20.9m/s. The ball is caught 36.0231m from the thrower. The acceleration due to gravity is 9.81m/s square. Explain how long is it in the air ?
Charges of 6.0 uC are placed at corners of a square that has sides of 2.0cm. Find the magnitude and direction of the force on the charges
A 8 Omega resistor is connected to a 16 V battery. What is the current through the battery
In a certain compound microscope, the object is 9.0 mm from the objective. What overall magnification is produced
The skier starts at a snow covered slope which is inclined 20 degrees above the horizontal. The skier has a mass of 100kg. How fast are is he going at the bottom
A series RLC circuit has a 242 Hz resonant frequency, and is driven by an AC voltage source at 315 Hz. Find the maximum voltage of the source
You sled down a hill of 45-m vertical height. The combined mass of you and your sled is 130kg. How much work was doen against friction during your decent
A ferry transports tourists among three islands. It sails from the first island to the second island, 5.41 km away, Calculate the distance between the first and third islands
Two 10 cm long thin glass rods uniformly charged to + 10;{rm nC} are placed side by side, 4cm apart. What are the electric field strengths E_1, E_2, and E_3 at distances 1.0 cm, 2cm, and 3cm to the right of the rod on the left, along line connecti..
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