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The only forces acting on a body have magnitudes of 20 N and 35 Nand directions that differ by 80 degrees. The resultingacceleration has a magnitude of 20 m/s2. What is the approximate mass of the body?
Two wires are identical, except that one is aluminum and one is nichrome. The aluminum wire has a resistance of 0.21 ?. What is the resistance of the nichrome wire
a rock climber throws a small first aid kit to another climber who is higher up the mountain. the initial velocity of
A piece of Nichrome wire has a radius of 5.2 x 10-4 m. It is used in a laboratory to make a heater that dissipates 3.50×102 W of power when connected to a voltage source of 100 V. Ignoring the effect of temperature on resistance, estimate the necessa..
Three resistors are connected in parallel to a 12.0 V battery. Two of the resistance values are 58\Omega and 42\Omega. what is the value of the third resistor
Explain the velocity of two different objects: heavy rock & light feather. 1st, describe what happens when the two objects are dropped on Earth. 2nd, compare this to what happens on the Moon.
A resonant circuit in a radio receiver is tuned to a certain station when the inductor has a value of 0.295 mH and the capacitor has a value of 25.7 pF. Calculate the frequency of the radio station
It takes sound waves of frequency 500 Hz 14.7 ms to make a round trip through a hollow pipe of length 7.5 m filled with helium. What is the speed of sound in helium
When 3880 J of heat are added to a 0.159-m-long silver bar, its length increases by 4.31 x 10-3 m. What is the mass of the bar
A 7.1cm diameter horizontal pipe gradually narrows to 5.7cm . When water flows through this pipe at a certain rate, the gauge pressure in these two sections is 33.0kPa and 24.0kPa, What is the volume rate of flow
Find out the precession period of the axis
The Trans-Alaskan pipeline is 1,300 km long, How much does the steel pipeline expand due to the difference in temperature
q1. a sanding disk with rotational inertia 2.4 10-3 kgbullm2 is attached to an electric drill whose motor delivers a
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