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Question: Two objects (m1 = 2.15 kg and m2 = 4.30 kg) sit on a horizontal, frictionless surface and are pushed together with a compressed spring between them. The spring has a spring constant of 154 N/m and the spring is compressed a distance of 2.5 m. The masses are then released.
a. How much energy was stored in the spring?
b. Assuming that all of the stored energy is transferred to the massses and that neither mass is attached to the spring after they are released, find the velocity of each mass.
A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 3.7 m/s. The car is a distance d away. The bear is 30 m behind the tourist and running at 6.0 m/s. The tourist reaches the car safely. What is the m..
A horizontal 790-N merry-go-round of radius 1.60 m is started from rest by a constant horizontal force of 55 N applied tangentially to the merry-go-round
The mass of the ball is 1.65 kg, and the mass of the block is 2.27 kg. The length of the wire is 1.23 m. What is the algebraic expression for the speed of the ball just before the collision with the block
A sphere of radius a has a radial polarization given by P = \(\alpha r^{n} \) ^r (r_hat) , where \(\alpha\) and n are constants and n is greater than or equal to 0. Find the bound volume and surface charge densities. Find E inside and outside th..
Unless otherwise stated, all objects are located near the Earth's surface, where = 9.8 . A hockey puck with a weight of 1.0 is sliding freely across a section of very smooth (frictionless) horizontal ice. Calculate the upward force on the puck in bot..
A certain organ pipe, open at both ends, produces a fundamental frequency of 256 in air.If the pipe is filled with helium at the same temperature, what fundamental frequency will it generate ? Take the molar mass of air to be 28.8 and the molar ma..
An unknown resistor is connected between the terminals of a 7.50 V battery. Energy is dissipated in the resistor at the rate of 0.510 W. At what rate is energy now dissipated
Two charged particles, q1 = ?2.50×10?3 C and q2 = +3.550e-3 C, are separated by a distance of 5.00 cm. find the electric potential energy of this configuration
Two capacitors are connected to a battery. The battery voltage is V = 50 V, and the capacitances are C1 = 2.00 µF and C2 = 4.00 µF. Determine the total energy stored by the two capacitors when they are wired (a) in parallel and (b) in series.
A person can focus clearly only on objects between 37.5cmand 51.0cm from his eyes. Find the powers of the correcting contact lenses needed to correct his closeup vision and distant vision
A time-varying horizontal force F(t) = At4 + Bt2 acts for 0.500 s on a 12.25-kg object, starting at time t = 1.00 s. What impulse does this force impart to the object
A capacitor is discharged when a wire is connected across its terminals, How much energy is released for a 1.00 uF capacitor with 10.0 V across its plates
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