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A ball of mass 1.10 kg moving with speed of 2.0 m/s hits a wall and bounces back with the same speed in the opposite direction. What is the change in the ball's kinetic energy?
The potential difference between the ends of a resistor is 9 V and the rate of energy dissipation in it is 18 W. What is the value of that resistor
Two charged plates create a potential difference of 190 V. At a point halfway between the plates an electron is released from rest. What was the initial speed and direction of the proton
A solid disk of mass M and radius R is pivoted so that it can rotate about its center. The disk is initially at rest. A ball of mass m and speed v travels along a path tangential to the rim of the disk.
A bicycle wheel is accelerating at the constant rate of 1 rev/s2. After 4.6s how many revolutions does it turn
The end of the spring is next to the 13 cm mark on the ruler. If a 2.0-kg mass is now attached to the end of the spring, elucidate where will the end of the spring line up with the ruler marks?
question1if an astronaut can throw a certain wrench 12.0rm m perpendicularly upward on earth how high could he throw it
An inductor has an inductance of 0.015 H. The voltage across this inductor is 49 V, What is the current in the inductor
A gymnast on a high bar swings through three revolutions in a time of 2.90 s. The magnitude of the average angular velocity of the gymnast, in rad/s, is
The volume of 9 mol of a monatomic gas is increased from 3 L to 6 L at constant pressure. The initial temperature of the gas is 31?C. How much heat must be supplied to the gas
In brief explain the changes that the Sun will go through after it exhausts its core hydrogen. Be sure to describe both the changes occurring in the Sun's core and the changes visible from outside the Sun. What do we mean by the stages we call hydrog..
What mass (in grams) of steam at 100°C must be mixed with 377 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 58.0°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, ..
An elevator has mass 550kg , not including passengers. The elevator is designed to ascend, at constant speed, What is the maximum number of passengers that can ride in the elevator
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