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Professional baseball pitchers can deliver a pitch which can reach the blazing speed of 100 mph (miles per hour). A local team has drafted an up-and-coming left handed pitcher who can consistently throw at 93.00 mph. Assuming the ball has a mass 142.0 g and has this speed just before a batter would make contact, how much kinetic energy does the ball have?
How high would the ball need to be dropped from to attain the same energy?
A 9820 kg sailboat is moving through the waters of the Atlantic. Initially, the boat is traveling at 20 mph, 29 degrees East of North. What is the net force (Fnet) acting on the boat
One force is 60.0 N along the x-axis, the second is 75.0 N along a direction making a counterclockwise angle of 150.0° with the x-axis. Illustrate what is the magnitude of the third force?
If someone is running in a 100m race and you want to work out the distance the sprinter has run what part of the sprinters body do you measure from the foot head or arm
The drive propeller of a ship starts from rest and accelerates at 2.50 x 10-3 rad/s2 for 2.15 x 103 s. find the total angular displacement of the propeller
A 6.0 ?F capacitor is connected in series with a 4.0 ?F capacitor and a potential difference of 200 V is applied across the pair. What is the potential difference across the 6.0 ?F capacitor
You work for a moving company and are given the job of moving two crates (masses are 130kg and 280kg) held together by a rope attached between the two. You pull on a rope attached to the larger crate giving the system the acceleration of 0.29m/s2. Wh..
A particle of 8 kg with a veloctiy of 40 m/s hits a 40 kg particle that is at rest. The collision is elastic. What are the final velocities of the particles
A research submarine has a 20-cm-diameter window that is 8.0cm thick. What is the submarine's maximum safe depth in salt water
In one day, a 90kg mountain climber ascends from the 1520m level on a vertical cliff to the top at 2360m, What is her change in gravitational potential energy on the first day
Calculate the speed of a proton with a kinetic energy of 1.48 eV, Find the speed of an electron that has a kinetic energy of 1.48 eV. 1 eV = 1.602 × 10^?19 J
q1. a spool of thin wire with inner radius r 0.50 m outer radius r 0.56 m and moment of inertia icm 0.81 kgm2 pivots
An electron is accelerated through 15 kV and is then allowed to circulate at right angels to a uniform magnetic field with B = 25 mT. What is its path raduis
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