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The Earth is constantly being bombarded by cosmic rays, which consist mostly of protons. Assume that these protons are incident on the Earth's atmosphere from all directions at a rate of 1038. protons per square meter per second. Assuming that the depth of Earth's atmosphere is 102.0 km, what is the total charge incident on the atmosphere in 347.0 s? Assume that the radius of the surface of the Earth is 6378. km.
You are designing a testing machine for a golf ball manufacturer. What is the speed of the 0.050 kg golf ball just after being struck by the clubhead
A baseball outfielder throws a 0.150 kg baseball at a speed of 45.0 m/s and an initial angle of 28.0°. Illustrate what is the kinetic energy of the baseball at the highest point of its trajectory?
An artificial satellite circling the Earth completes each orbit in 133 minutes. Find the altitude of the satellite
Two point charges and are held in place 4.50 apart. Another point charge -2.5 of mass 6 is initially located 3.00 from each of these charges and released from rest. You observe that the initial acceleration of -2.50 is 354 upward, parallel to the ..
Illustratr what is the amplitude of the oscillations? What were the (b) position and (c) velocity of the block at t = 0 s?
A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. find the tension in the tightrope
A 3kg model rocket initially at rest experiences an average force of 3950N over a distance of 200 cm. How much has the rockets kinetic energy increased
An electric heater carries a current of 16.5 A when operating at a voltage of 1.50 102 V. What is the resistance of the heater
A hydrogen atom initially in the ground state absorbs a photon, which excites it to the n = 3.00 state. determine the frequency of the photon
During a 75-ms interval, a change in the current in a primary coil occurs. What is the change in the primary current
Two point charges, q1 = -12.5 ?C and and q2 = +18.7 ?C, are placed at two of the corners of a right triangle with a = 23.5 cm, Find the magnitude of the electric field at the third corner of the triangle
The best laboratory vacuum has a pressure of about 1 × 10-18 atm, or 1.010 × 10-13 Pa. How many gas molecules are there per cubic centimetre in such a vacuum at 293K.
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