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A 0.60-kg ball, attached to the end of a horizontal cord, is rotated in a circle of radius 1.1m on a frictionless horizontal surface. If the cord will break when the tension in it exceeds 75N , what is the maximum speed the ball can have?
A well-insulated electric water heater warms 121kg of water from 20.0° C to55.0° C in27.0min. Find the resistance of its heating element, which is connected across a 240-V potential difference.
A converging lens has 31.3 cm focal length, and is placed 20.9 cm behind a diverging lens. Parallel light strikes the diverging lens, What is the focal length of the diverging lens in cm
Assume the wheel has a constant negative angular acceleration of magnitude 2.50 rad/s2. Explain through how many radians has the wheel turned during the interval found in (a) which is 4.98?
Two crickets, Chirpy and Milada, jump from the top of a vertical cliff. Chirpy just drops and reaches the ground in 4.00s, How far from the base of the cliff will Milada hit the ground
A stone is thrown into the air with an initial velocity of 50 m/s at 37degress to the horizontal, find the total horizontal distance it travels
An RLC circuit is used in a radio to tune into an FM station broadcasting at f=99.7 Mhz. What capacitance should be used
A diffraction grating has 1.5?m spacing. Find the first-order diffraction angles for the following wavelengths. Find the first-order diffraction angles for red light
An elderly sailor is shipwrecked on a desert island, but manages to save his eyeglasses. What is the magnifying power of the telescope he can construct with these lenses
Two 2.1 cm 2.1 cm square aluminum electrodes are spaced 0.57 mm apart. What is the magnitude of the charge on each electrode
A coil of 39 turns is in the shape of an ellipse having a major axis of 12.0 cm and a minor axis of 8.84 cm. The coil rotates at 139 rpm in a region in which the Earth's magnetic field is 64.5 ?T. What is the maximum voltage induced in the coil if th..
A charge +q is located at the origin, while an identical charge is located on the x axis at x = +0.78 m. Where should the third charge be located
what is the speed of a 200g baseball with a de Broglie wavelength of .18nm, what is the de Broglie wavelength of a 200g baseball with a speed of 20 m/s
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