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A baseball hit just above the ground leaves the bat at 30m/s at 45°above the horizontal. Part A How far away does the ball strike the ground? Express your answer to two significant figures and include the appropriate units. Part B How much time is the ball in the air? Express your answer to two significant figures and include the appropriate units.
Trucks with the noted masses moving at the noted speeds crash into barriers that bring them to rest with a constant force
A 151 kg rocket moving radially outward from Earth has a speed of 5.03 km/s when its engine shuts off 226 km above Earth's surface. (a) Assume negligible air drag; find the rocket's kinetic energy when the rocket is 535 km above Earth's surface. (b) ..
A 2-kg block of ices slides frictionlessly down a plane inclined at 22° a distance of 2 m. What is the normal force on the block of ice
A certain camera lens has a focal length of 147 mm. Its position can be adjusted to produce images, Over what range of object distances is the lens useful
Two 2.1-cm-diameter electrodes with a 0.10-mm-thick sheet of Teflon between them are attached to a 9.0 V battery, What is the charge before the Teflon is removed
You are to throw a ball with a speed of 13 m/s at a target that is 4.5 m above the level at which you release the ball. At what angle above the horizontal must you throw the ball
A vector {vec A} has a magnitude of 40.0 {rm m} and points in a direction 20.0 ^circ below the positive x axis. A second vector, {vec B}, has the magnitude of 75.0 {rm m} and points in a direction 50.0 ^circ above the positive x axis.
What is direction of the resultant velocity
A RC circuit is to be wired for testing using a 33 ohm resistor anda 100 mirco farad capacitor. The signal source is a squarewave generator, Calculate the expected time constant
Consider 3 Resistors: 10 k?, 20 k?, and 30 k?. Calculate the total resistance if the resistors are connected in series with each other
The circuit in the figure below consists of wires at the top and bottom and identical metal springs in the left and right sides. estimate the magnitude of the magnetic field
Calculate the moment of inertia and the rotational kinetic energy for the following objects spinning about a central axis
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