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A system has 1000 joules of energy added to it and performs 800 joules of work. Calculate the change in internal energy.
At the low point in its swing, a pendulum bob with a mass of 1 kg has a velocity of 8 m/s. What is its kinetic energy at the low point
A novice skier, starting from rest, slides down a frictionless 35° incline whose vertical height is 118 m. Explain how fast is she going when she reaches the bottom? Illustrate what was the initial speed of the arrow?
Calculate the inductance of a solenoid with 275 turns if the length of the solenoid is 30 cm and its radius is 2.5 cm
he rate P at which a star radiates energy in the form of electromagnetic waves can be calculated using the equation, Calculate a numerical value for the intensity of sunlight
A small immersion heated is rated at 350 W. Estimate how long it will take to heat a cup of soup (assuming this is 250 ml of water) from 20 degree C to 60 degree C.
It is common to see birds of prey rising upward on thermals. The paths they take may be spiral-like. Find the magnitude of the bird's acceleration
The catapult on an aircraft carrier can take an aircraft from 0 to 197 mph ( the launch speed) in 5 Seconds, at which time the aircraft launches
In a particular region of the earth's atmosphere, Calculate the volume charge density of the atmosphere assuming it to be uniform between 258 and 402 m. Neglect the curvature of the earth
A parallel-plate capacitor in air has a plate separation of 1.50 cmand a plate area of 25.0cm2. The plates arecharged to a potential difference of 2.50 x 102 V anddisconnected from the source. The capacitor is then immersedin distilled water.
1. Chameleons use their tongues to catch their prey. Their tongues typically accelerate at 250 m/s2 for up to 20 ms, then they travel at constant speed for a further 30 ms. During this total duration, of acceleration plus constant motion, of 5..
Two small objects are connected by a string of length l and are initially positioned at rest on a horizontal plane. Charge of each object is q, mass is m. String is broken and objects start to slide away from each other on the horizontal plane. What ..
A 73 kg canoeist standsi n the middle of her 22 kg canoe. Calculate the distance from the canoeist to the shore
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