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At a given instant a projectile, whose mass is 6 kg, is moving with a speed of 60 m/s and at a height of 100 m. Determine the projectile's total energy at this instant.
Use counterclockwise as the positive angular direction, between the limits of -180?and +180?as measured from the positive x axis.Answer in units of ?.
A horizontal board weighing 205.0 N is supported at points A and B in the figure below. The plank servesas a platform for a painter, who weighs 604.5 N. Find the maximum distance D, suchthat the plank will not tip, no matter where the painter stands.
An ideal transformer steps down 120V to 12V and the 2630 turn secondary supplies 12 A. What is the ratio of output power to input power
A 74 kg man in a 5.0 kg chair tilts back so that all the weight is balanced on two legs of the chair. find the pressure exerted by each leg on the floor
Calculate the point between Uranus and the Sun at which an object can be placed so that the net gravitational force exerted on it by these two objects is zero
A 31.0-kg crate rests on a horizontal floor, and a 72.5-kg person is standing on the crate. Determine the magnitude of the normal force that the crate exerts on the person
A 1.0kg object is released from rest 500km ( approx 300 miles) above the earth. What would the impact speed be if the earth were flat
A 2000kg car accelerates from 20 to 60km/h on an uphill road. Determine the work done by the engine
A generator with an rms voltage of 150V is connected in series to a resistor 3.25 kilo-ohm and a capacitor 3.50 microfarad. find the average power consumed by this circuit
one mole of a monatomic ideal gas is in a fixed volume container and is in thermodynamic equilibrium with its
Is the heat exchange between the metal and the water in the calorimeter by radiation, conduction or convection? Why
An ideal gas is in contact with a heat reservoir so that it remains at constant temperature. How much heat (in J) flows from the ideal gas to the reservoir
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