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A proton in the upper atmosphere moves at 9.2×105m/s, perpendicular to Earth's magnetic field, which at that point has magnitude 5.3×10-5 T .Find the curvature radius of the proton's trajectory.
What is the magnitude of the contact force on the student by the backpack.
question two subway stops are separated by 1100 m. if a subway train accelerates at 1.2ms2 from rest through the first
What is the tension in the string.At one time, television sets used "rabbit-ears" antennas. Such an antenna consists of a pair of metal rods.
Two identical 1.40 kg masses are pressed against opposite ends of a spring of force constant 1.70 N/cm, Find the maximum speed of each mass when it has moved free of the spring on a smooth
Drawing on Eratoshthenes' method, if two observers are due north and south of each other and are separated by 400 km, what is circumference of their spherical world if they see the similar star on their meridian at altitudes of 23degrees and 47deg..
What is the difference between the terms electric potential and voltage? Give an example. How can the knowledge of electric potential help usunderstand the motion of electrically charged particles in electriccircuits?
a physical pendulum consists of a uniform solid disk (of radius R = 56.6 cm) supported in a vertical plane by a pivot located a distance d = 24.0 cm from the center of the disk. What is the period of the resulting simple harmonic motion
The ball loses contact with the spring and leaves the gun when the spring is still compressed by 12 cm. Elucidate what is the speed of the ball when it hits the ground, 1.4 m below the spring gun?
two small charges with a mass of 1 gram each are connected by 2 cm long insulating rod of negligible mass. Obtain the moment of inertia around the center of mass
A man is trying to lift 60.0 kg off the floor by bending at thewaist. Assume that the man’s upper body weighs 455 Nand the upper body’s centre of gravity is 38 cm from thesacrum (tailbone).
Two point charges are located as shown in the figure, with charge q1 = +3.5 C at x = ?3.0 m, y = 0, How much work must be done on the electron to move it to the origin
A fish swimming in a horizontal plane has velocity i = (4.00 + 1.00 ) m/s at a point in the ocean where the position relative to a certain rock is i = (14.0 ? 4.20 ) m. What are the components of the acceleration of the fish
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