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A 1500 W radiant heater os ocnstructed to operate at 110V. How much thermal energy is produced in 1 hour by the heater. Express your answer in joules and calories.
q1. if the four-engine jet accelerates down the runway at 4 ms2 and one of the jet engines fails how much acceleration
A 795 kg car moving at 26 m/s brakes to a stop. The brakes contain about 15 kg of iron, that absorbs the energy. What is the increase in temperature of the brakes.
A 440.0-N force accelerates a go-cart and its driver from 10.1 m/s to 18.1 m/s in 5.20 s. What is the mass of the go-cart plus driver
he string in a yo-yo is wound around an axle of radius 0.529 cm. The yo-yo has both rotational, What is the speed of the yo-yo when it reaches the distance of 1.50 m
A 1 uF capacitor is charged when it is connected across a 9 V battery, Find the final charge and the voltage across the plates for the 1 uF and 2 uF capacitor
The magnitude of vector vector A is 31.6 units and points in the direction 321° counterclockwise from the positive x-axis. find out the x-component of this vector.
An object 25 cm from a convex mirror is observed to produce an image 13.6 cm behind the mirror. What is the focal length of the mirror
Two forces act on a car. Force A is 120 N, west and force B is 200 N at 60° N of W. What is the direction of the resultant force on the car
A hot iron horseshoe (mass = 0.470 kg), just forged, is dropped into 1.44 L of water in a 0.340 kg iron pot initially at 19.1°C. calculate the initial temperature of the hot horseshoe
A plane, diving with constant speed at an angle of 53.0° with the vertical, releases a projectile at an altitude of 750 m. The projectile hits the ground 7.00 s after release.
A closed, stationary, rigid tank contains Refrigerant 134a, initially at 100oC. The refrigerant is cooled until it becomes saturated vapor at 20oC. Determine the initial and the final pressures of the refrigerant and the heat transfer during the proc..
A simple harmonic wave of amplitude 5.0cm, wavelength 70cm, What's the wave energy per unit length of the wire
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