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As you bounce a tennis ball of mass 5.30 10-2 kg off a wall, its velocity changes from vx = 10.5 m/s to vx = -7.4 m/s. Find the impulse applied to the ball.
A uniform ladder of mass 50 kg and length 5m leans at an angle Theta against a frictionless wall. determine the minimum angle the ladder will not slip
A spring with a spring constant k of 18 N/m is stretched a distance of 12 cm (0.12 m) from its original unstretched position
When a current of 2.0A flows in the 100-turn primary of an ideal transformer, this causes 14 A to flow in the secondary. How many turns are in the secondary
If the loop's diameter changes from 24.0cm to 5.8cm in 0.67s , what is the direction of the induced current, If the coil resistance is 2.6? , what is the average induced current
Two thermal reservoirs are connected by a solid copper bar. The bar is 3 m long, and the temperatures of the reservoirs are 63.0°C and 32.0°C. What is the rate of heat flow through the bar
the earth takes slightly less than one day to complete one rotation about the axis passing through its poles. what is the angular speed of the earth about its axis
A cubical box with sides of length a#consists of five metal plates which are welded together and grounded, Find the potential everywhere inside the box
A cart carrying a vertical missile launcher moves horizontally at the constant velocity of 30.1 to the right. It launches a rocket vertically upward. The missile has an initial vertical velocity of 40.33 relative to the cart.
A river has a steady speed of 0.482 m/s. A student swims upstream a distance of 1.00 km and swims back to the starting point. If the student can swim at a speed of 1.24 m/s in still water, how long does the trip take
The voltage across a resistor is equal to the product of the current through the resistor and the resistance of the resistor, What is the potential difference of the battery
An airplane flies eastward and accelerates uniformly. At one position along its path it has a velocity of 33.5 m/s. It then flies a further distance of 46.9 km and its velocity is 43.1 m/s. Find the airplane's acceleration and calculate how much t..
A standard 35mm slide measures 24mm by 36mm. Suppose aslide projector produces a 60cm by 90cm image of the slide on a screen. What is the distance between the slide and the screen
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