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The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 15-g nail when it is struck by a 550-g hammer moving with an initial speed of 4.2 m/s.
Three resistors are connected in parallel to a 12.0 V battery. Two of the resistance values are 58\Omega and 42\Omega. what is the value of the third resistor
when the switch is closed and the capacitor is fully charged, how do you find the voltage across a capacitor
A spring is oscillating with a frequency of 1.7Hz. 3.9 seconds after the spring is released it is -20cm from equilibrium. Find the amplitude of the spring
High speed photography shows that when a golf club hits a golf ball, the club and the ball typically remain in contact for 1x 10?3 s, Estimate the magnitude of the force that the club exerts on the ball
business equipment for a $5,000 loss, stock investment for a $7,000 loss, and her principal residence for a $16,000 loss. Presuming adequate income, explain how much of these losses may Joan claim on her 2011 return?
Find the Youngs modulus for the muscle tissue
A resistance R and a 4.7-H inductance are in series across a 60-Hz ac voltage. The voltage across the resistor is 22 V, What is the ac input voltage
The resistance of a copper wire is 0.8? at 20 DC. When it is placed in an oven, its resistance is 1.2?. What is the temperature of the oven
The velocity vs. time curve of an object is an increasing straight line. What is the acceleration of the object
A bare helium nucleus has two positive charges and a mass of 6.64 multiplied by 10-27 kg. What voltage would be needed to obtain this energy
The water in a deep underground well is used as the cold reservoir of a Carnot heat pump that maintains the temperature of a house at 296 K. Determine the temperature of the well water
The impact of the racket gives the ball a constant acceleration of 46 cm. Illustrate what is the magnitude of the net force acting on the ball?
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