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Two workers hold a heavy pail. Its mass is unknown. One worker exerts a 220N force at 137 degrees from vertical. The other worker exerts a 170N force. What is the weight of the pail?
While running, a person dissipates about 0.524 J of mechanical energy per step per kilogram of body mass. If a 65.5 kg person dissipates a power of 76.6 W during a race, explain how fast is the person running?
A 5.0 ? resistor is connected in series with a 10.0 ?resistor. This combination is then connected in parallel witha 7.5 ? resistor. The three resistor network is then connectedin series with a 15 ? resistor.
Find out the wavelengths of the light.
In 13.6 s, 220 bullets strike and embed themselves in a wall. What is the average change in momentum per second for the bullets
An oscillator vibrating at 1210 Hz produces a sound wave that travels through an ideal gas at 325m/s when the gas temperature is 22.0 C. What should the gas temperature be to achieve this wavelength
a. how much 235-u is consumed per year in gy to produce enough electricity to continuously run a 100-w light bulb?b.
An ordinary glass is filled to the brim with 310.0mL of water at 100.0 ?C. how much water could be added to the glass
q1. a potential difference of 87 mv exists between the inner and outer surfaces of a cell membrane. the inner surface
A 1500 kg blue car was travelling at 90 km/h. A 1200 kg red car was traveling behind the blue car at 108 km/h.when the two cars were 55 m apart, the blue car began braking.it took the driver of the red car 0.50 s to start braking her car. If the ..
a commercial aircraft is going from jfk airport to ohare airport at a cruising speed of 650 kmh measured relative to
A bug of mass 1.0 grams is caught up in the center of an oscillating spider web. show that this motion is generated by hooke's law force, f=-kx
A 220-N sphere 0.20 m in radius rolls without slipping 6.0 m down a ramp that is inclined at 37 degrees with the horizontal. What is the angular speed of the sphere
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