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A 0.75 kg ball attached to the end of a horizontal cord, is rotated in a circle of radius 1.9 m on a frictionless horizontal surface. If the cord breaks the tension in it exceeeds 55 N. What is the max speed the ball can have?
You are driving a car that weighs 1500 kg at 50 km/h, How much force would you need to apply on the wheels of your car through the breaks in order to be able to stop short of hitting the cat
If you weigh 690 N on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 25.0 km.
What is the magnitude of an average acceleration of the ball
Express your answers using two significant figures. Enter the x and y coordinates of the charge separated by a comma.
A friend of yours is loudly singing a single note at 400 Hz as driving toward you at 250 m/s on a day when the speed of sound is 340 m/s
A simple pendulum with mass m = 1.5 kg and length L = 2.41 m hangs from the ceiling, What is the magnitude of the radial acceleration as the pendulum passes through the equilibrium point
The biochemistry that takes place inside cells depends on various elements, such as sodium, potassium, and calcium, that are dissolved in water as ions, What is the resistance of the ion channel
Two particles are fixed to an x axis: particle 1 of charge q1 = +2.1 10-8 C at x = 20 cm and particle 2 of charge q2 = -4.00q1 at x = 70 cm. At what coordinate on the axis is the net electric field produced by particles equal to zero.
A meteor streaking through the night sky is located with radar, its has moved to point B, Find the x component of its average velocity between A and B
Presume the electron is at the midpoint between the proton.
What would be apparent speed of the spacecraft image
What is the tangential velocity of a satellite in a circular orbit 300km above the surface of the Earth, How long does the satellite take to complete one orbit
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