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A bat hits a moving baseball. If the bat delivers a net eastward impulse of 1.4 N-s and the ball starts with an initial horizontal velocity of 3.8 m/s to the west and leaves with a 5.4 m/s velocity to the east, estimate what is the mass of the ball?
(in grams)
question1as john is travelling along a straight inter-state highway he notices that the mile marker reads 245 km. john
A pulley wheel that is 22.0 cm indiameter has a 5.2 m long cord wrappedaround its periphery. How long does the unwinding take
A dancer is standing on one leg on a drawbridge that is about to open. Before the drawbridge starts to open, it is perfectly level with the ground. The dancer is standing still on one leg.
a rod length 2.0m is uniformly charged and has a total charge of 5.0 nc. what is the electric potential at a point
It's nighttime, and you've dropped your goggles into a swimming pool that is 4.0 mdeep. How far are the goggles from the edge of the pool
a person whose near-point distance is 5 cm wears a pair of glasses that are 2.2 cm from her eyes. with the aid of these
Two kilomoles of a monatomic ideal gas are at a temp of 300K. The gas expands reversibly and isothermally twice its original volume. Calculate the work done by the gas. (Note that for an ideal gas U is proportional to T, so the change of U = 0 in ..
a frictionless pendulum of length 3 m swings with an amplitude of10 degrees. What is the kinetic energy of the pendulum whenits potential energy is 5 J
Calculate the resistance per unit length of a nichrome wire, which has a radius of 0.182 mm. The resistivity of nichrome is 1.5 × 10^?6 ? · m
A potential difference of 80 mV exists between the inner and outer surfaces of a cell membrane. The inner surface is negative relative to the outer surface. How much work is required to eject a positive sodium ion (Na+) from the interior of the cell?
A circuit containing a 4.5 H inductor has an alternating current supplied to it. If Irms is 6.9 A and Vp is 61 V, find the frequency of the signal
How much time take for the package to reach the ground.
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