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In a particular region of the earth's atmosphere, the electric field above the earth's surface has been gauged to be 150 N/C downward at an altitude of 240 m and 165 N/C downward at an altitude of 404 m. Compute the volume charge density of the atmosphere assuming it to be uniform among 240 and 404 m. Neglect the curvature of the earth.
Under such extreme conditions, protons and electrons are squeezed to form neutrons, giving birth to a neutron star. Neutron stars are massively heavy - a teaspoon of the substance of a neutron star would weigh
An airplane is flying with the velocity of 85.0 m/s at an angle of 20.0 degrees above the horizontal. When the plane is a distance 107 m directly above the dog that is standing on level ground, a suitcase drops out of the luggage compartment. How far..
A thick, vertical iron pipe has an inner diameter of 0.077 m. A thin aluminum (? = 23x10-6 (C°)-1) disk, What is the temperature of the aluminum disk when the disk falls into the pipe
A hot-air balloon is ascending at the rate of 12 m/s and is 98 m above the ground when a package is dropped over the side. How long does the package take to reach the ground
Two masses m1 and m2 are connected by an ideal spring and placedon a horizontal frictionless surface as shown. they are pulledapart so that the spring is stretched an amount x0 and then theyare released simultaneously. the constant for the spring ..
A copper pot sits on a hot plate that is at a remperature of 140 C, How long before one half the pots contents evaporate
Ultrasound intensity level: Beta = 10Log (I2/I1), I1 and I2 = intensity at different locations/times An ultra sound signal is sent under sea water (v=1530m/s) to detect the location of an object. Determine the location of the object from the source
What is the acceleration of a rising hot-air balloon if the ratio of the air density outside the balloon to that inside is 1.39? Neglect the mass of the balloon fabric and the basket.
The radius of the hydrogen atom is 0.053 nm. What is the frequency of the circular motion of the electron in the hydrogen atom
A baseball is hit into the air at an initial speed of 36.7 m/s and an angle of 59.5 ° above the horizontal. At the same time, the center fielder starts running away from the batter and catches the ball 0.740 m above the level at which it was hit. If ..
A time-varying horizontal force F(t) = At4 + Bt2 acts for 0.500 s on a 12.25-kg object, starting at time t = 1.00 s. What impulse does this force impart to the object
What is the height h of the CM of the can and contents (d) If x is the height of the remaining soda at any given instant, find out x when com reaches its lowest point.
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