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A metal object is suspended from a spring scale. The scale reads 920 N when the object is suspended in air and 750 N when the object is completely submerged in water.
1. Discover the volume of the object.
2. Discover the density of the metal.
A hunter aims directly at a target (on the same level) 101m away. If the bullet leaves the gun at a velocity of 203m/s, by how much will it miss the target.
A radio transmitter creates a time-dependent currentI(t)=I0sin ωt in the radio antenna, whereI0=20A and ω=6.3e6 persecond (corresponding to about the middle of the AM band). what is the average powerradiated by this antenna if it is 160m long?
a stone is thrown horizontally at a speed of 5.0m/s from thetop of a cliff that is 78.4m high, how long dies it take the stone to reach the bottom of the cliff
A car is approaching a reflecting wall. A stationary observer behind the car hears a sound of frequency 790 Hz from the car horn and a sound of frequency 813 Hz from the wall. What is the frequency of the car horn
A package containing 60.0 millicuries of 32P (half life = 14.3 days) was shipped on February 11, 2011 at 11:00 am. The package was received at 11:00 pm on February 14, 2011. What was the activity of the shipment when it was received?
A nonconducting spherical shell, with an inner radius of 4 cm and an outer radius of 6 cm, has charge spread nonuniformly through its volume between its inner and outer surfaces. The volume charge density ? is the charge per unit volume, with the ..
Find out the magnetic field strength
Gas is confined in a tank at a pressure of 12.9 atm and a temperature of 28.3°C. what is the new pressure in the tank
your friend who works for the college radio station must make electric-field measurements for a report to be filed with
What would be the nature and height of the image?
Two moles of an ideal gas undergo a reversible isothermal expansion from 3.25×10-2 to 4.59×10-2 at a temperature of 21.7. what change of entrophy delta s of the gas.
Determination of the Initial Velocity of a Projectile from Range-Fall Measurements. After the horizontal projectile leaves the gun, what are the accelerations in the x and y directions?
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