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The reserve capacity (RC) of a car battery is defined as the number of minutes the battery can provide 25.0A of current at a potential difference of 10.5V. Thus, the RC indicates how long the battery can power a car whose charging system has failed. If a car battery stores 1.764?106J of energy, what is its RC?include units.
Calculate the entropy change for the following system: One kilogram of 80 C aluminum is placed into 2L of 20 C water in a container with negligible heat capacity and adiabatic walls. The water and aluminum reach thermal equilibrium. Assume specific h..
A cart of mass m = 1.4 kg is released from the top of a ramp sloped ? = 13° relative to the horizontal. The length of the ramp is L =9.6 m. find the car's Kinetic Energy at the bottom of the ramp
In refraction the angle of refraction depends on the wavelength, longer wavelengths bend less. How does the wavelength affect the angle of reflection
An object is found to have a weight in air of 500N. It is then tied to a string connected to a balance and immersed in water (density of water is 1000 kg/m3). The scale now reads 450 N. at last the object is immersed in oil and is found to have a ..
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 60.7 degrees. Find the the angle the resultant force makes with dog A's rope
An object is undergoing simple harmonic motion with period 1.250 s, At t=0 the object is at x=0. How far is the object from the equilibrium position at time 0.480s
The speed of a projectile when it reaches its maximum height is 0.39 times its speed when it is at half its maximum height
A sailor strikes the side of his ship just below the waterline. How deep is the ocean at this point
A beam of unpolarized light in air is incident at an angle of 59.0? (with respect to the normal) on a plane glass surface. What is the angle of refraction of the transmitted beam
A speedboat moving at 33.0 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of ?3.20 m/s2 by reducing the throttle. (a) How long does it take the boat to reach the buoy? (b) Find the total tim..
What is the Kinetic Energy of the sphere when it is 4.70cm from the line of charge if the only force on it is the force exerted by the line of charge
A spring is mounted from the ceiling. As a mass is attached, the spring stretches 1.04 m. What will be the frequency of the resulting oscillation
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