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Suppose a soccer player kicks the ball from a distance 28 m toward the goal. Find the initial speed of the ball if it just passes over the goal, 2.4 m above the ground, given the initial direction to be 55° above the horizontal.
An object placed 20 cm from a concave mirror forms an image that is three times as large as the object on a screen. Discover the radius of curvature of the mirror.
On a frictionless, horizontal air track, a glider oscillates at the end of an ideal spring of force constant 4.00. Find the maximum force the spring exerts on the glider
At what height above the earth is the acceleration due to gravity 20.0% of its value at the surface
a 2.6-kg shere of radius 35cm is intially rolling on a flat surface with a speed of v.40 ms. it comes to rest in 80m.
If a current of 8.3 A is drawn from the battery when a resistor R is connected across the terminals ab of the battery, what is the power dissipated by the resistor R
the electric field points due east and has a magnitude of 3.0 x 105 nc. the mass of the electron is 9.11 x 10-31 kg and
A hydraulic lift in a garage has two pistons: a small one of cross-sectional area 4.50 cm2 and a large one of cross-sectional area 220 cm2. find what minimum force must be applied to small piston
White light shines on a 118nm thick sliver of fluorite (n=1.43). What wavelength is most strongly reflected
How many 65W light bulbs can be connected in parallel across a potential difference of 85 V before the total current in the circuit exceeds 2.10A.
0.16mol of argon gas is admitted to an evacuated 40cm3 container at 10 ?C. The gas then undergoes an isochoric heating to a temperature of 500 ?C
A spring is attached to the bottom of an empty swimming pool, Determine the percentage of the block's total volume that is hollow
Illustrate what is the magnitude of the normal force exerted on the car by the walls of the cylinder at point B (at the top of the vertical circle)?
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