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Two Dimensional Kinematics: A ball is thrown will speed of 13m/s, 7m above ground. Ball B is thrown in direction of 25 degrees above horizontal and Ball A is thrown straight downward. What is the landing speed of snowball B? What is the landing speed of Ball A?
A couple of astronauts agree to rendezvous in space after hours. Their plan is to let gravity bring them together. She has a mass of 60.0 kg and he a mass of 76.0 kg , and they start from rest 15.0 m apart.
There are two identical, positively charged conducting spheres fixed in space, find the initial charge on each sphere, q1 and q2 if initially q1
The area of a typical eardrum is about 5.0 × 10?5 m2. (a) Calculate the sound power (the energy per second) incident on an eardrum at the threshold of hearing. W (b) Calculate the sound power incident on an eardrum at the threshold of pain. W
If the frequency of oscillation of the wave emitted by an FM radio station is 95.8 MHz, calculate the wave period of vibration
A football is thrown with an initial upward velocity component of 12.5m/s and a horizontal velocity component of 17.0m/s. How high does it get above the ground
A thin rod (length = 1.37 m) is oriented vertically, with itsbottom end attached to the floor by means of a frictionless hinge.The mass of the rod may be ignored, compared to the mass of theobject fixed to the top of the r
having found the minimum kinetic energy of an alpha particle inside a nucleus to be roughly 2.0 mev and given that the
Consider an experiment where a subject lands during two conditions from a height of 0.2 m. During the first landing condition, the subject lands 'stiffly' (e.g., very little knee flexion).
The path of an electron, travelling at 3.7 × 104 meters/second, is making the right angle to a magnetic field. A single electron experiences a force of 2.2 × 10-15 Newton's while in the field. What is strength of the magnetic field .
A car travels due east with a speed of 35.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. Find the velocity of the rain
The drawing shows two positive charges q1 and q2 fixed to a circle. At the center of the circle they produce a net electric field that is directed upward along the vertical axis. Decide the ratio q2/q1.
A proton is located a small distance above the earth's surface and is released above a second proton, which exerts an electrostatic force on the released proton. Find the Electrostatic force between the two protons
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