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In 0.669 s, a 8.00-kg block is pulled through a distance of 3.75 m on a frictionless horizontal surface, starting from rest. The block has a constant acceleration and is pulled by means of a horizontal spring that is attached to the block. The spring constant of the spring is 405 N/m. By how much does the spring stretch?
A 6.50 g lead bullet traveling at 560 m/s is stopped by a large tree. what is the increase in temperature of the bullet
A damped mass-spring system oscillates at 275-Hz. The time constant of the system is 2.0 s. At t = 0, the amplitude of oscillation is 3.20cm and the energy of the oscillating system is then 32 J.
A 0.450-kg ball is dropped from rest at a point 1.30-m above floor. The ball rebounds straight upward to a height of 0.700-m. What are the magnitude and direction of the impulse of the net force applied to the ball throughout the collision with th..
An elevator cable can withstand a maximum tension of 19,500N before breaking. The elevator has a mass of 480 kg and a maximum acceleration of 2.24 m/s2. Engineering safety standards require that the cable tension never exceed two-thirds of the breaki..
the expression f arv br2v2 gives the magnitude of the resistive force in newtons exerted on a sphere of radius r in
a rocket is fired at a speed of 93.0 ms from ground level at an angle of 61.0 deg above the horizontal. the rocket is
Two tiny conducting spheres are identical and carry charges of -21.4C and +51.0C. They are separated by a distance of 3.30 cm. (a) What is the magnitude of the force that each sphere experiences?
A blacksmith cools a 1.30-kg chunk of iron, initially at a temperature of 650.0?C, by trickling 15.0?C water over it. How much water did the blacksmith trickle over the iron
A square copper plate has a circular hole in its center. Each side of the plate is 23.52 cm, and the radius of the circular hole is 7.827 cm. find the radius of the hole
The transformer in the power supply for a computer's 500-GB external hard drive changes a 120-V input voltage, what is the current in the primary and secondary when the drive is in operation
A tall tree is growing across a river from you. You would like to know the distance between yourself and the tree,as well as its height, How far away is the tree
A hydrogen atom is in its first excited state (n = 2). Using the Bohr theory of the atom, compute the linear momentum of the electron
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