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A baseball has mass 0.145 kg.
a) If the velocity of a pitched ball has a magnitude of 50.0 m/s and the batted ball's velocity is 60.0 m/s in the opposite direction, find the magnitude of the change in momentum of the ball.
b) Find the magnitude of the impulse applied to it by the bat.
c) If the ball remains in contact with the bat for 3.00 ms, find the magnitude of the average force applied by the bat.
A horse is pulling a buggy. the total force by the horse is 475N applied horizontally. What is the force of friction on the driver and buggy
The average resistivity of the human body is 5 ohm*m. The conducting path between two hands is approximated as a cylinder with length 1.6m, what is the resistance between the hands
A car of mass m is initially moving with a velocity v. Find the time that it takes for the car to come to rest
An electric motor rotating a workshop grinding wheel at a rate of 9.90 x 10^1 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 1.70 rad/s2.
Calculate the final equilibrium temperature assumning no heat loss after mixing occurs.
A cigarette lighter in a car is a resistor that, when activated, is connected across the 12-V battery. Suppose a lighter dissipates 32 W of power. find the resistance of the lighter
A simple pendulum has a mass of 0.150 kg and a length of 3.00 m. It is displaced by an angle of 12.0° and then released. What is the utmost speed?What is the maximum angular acceleration?What is the maximum restoring force.
A 1.8--tall object is 22 to the left of a lens with a focal length of 11 . A second lens with a focal length of 48 is 54 to the right of the first lens. find the distance between the image and the second lens
With what minimum speed should you toss a 140g ball straight up to hit the 11.0m-high roof of the gymnasium if you release the ball 1.30m above the ground? Resolve this problem using energy.
The intensity of the sound wave from a jet airplane as it is taking off is 85 W/m2 at a distance of 4.0 m. What is the intensity of the sound wave that reaches the ears of a person
q. a 2.1-kg block is released from rest and allowed to slide down a frictionless surface and into a spring. the far end
What is the phase dierence between wavefronts originating from the two slits, at a point on the screen located +Π/10m from the zero'th order?
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