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It is found experimentally that the electric field in a certainregion of Earth's atmosphere is directed vertically down. At analtitude of 260 m the field hasmagnitude 60.0 N/C. At an altitude of 190 m, the magnitude is 100 N/C. Find the netamount of charge contained in a cube 70 m on edge, with horizontal faces at altitudesof 190 and 260 m. Neglect the curvature of Earth.
A block of mass m is initially at rest on a frictionless surface. At time t = 0, an increasing force given by F = kt2 is applied to the block. Find the velocity and the displacement of the block as a function of time and graph x and v versus t.
The mass of the Moon is 7.18X10^22 kg and radius is 1738 km. If your mass is 90 kg, what would be your weight (gravitational force of attraction) on the Moon
A sinusoidal voltage ?v = (75 V) sin (160t) is applied to a series RLC circuit with L = 10 mH, C = 145 ?F, and R = 44 ?. What is the maximum current in the circuit
If the partial pressure of water vapor is 47 mm Hg in the lungs at 760 mm Hg pressure, what percentage of air does the water vapor constitue
A 52g ice cube can slide without friction up and down a 26 degree slope. The ice cube is pressed against a spring at the bottom of the slope, compressing the spring 10cm . The spring constant is 23N/m. When the ice cube is released, what distance wil..
a box of Cheerios (mass mC = 1.8 kg) and a box of Wheaties (mass mW = 2.5 kg) are accelerated across a horizontal surface by a horizontal force applied to the Cheerios box. what is the magnitude of the force on the Wheaties box from the Cheerios bo..
An ideal gas expands isothermally, performing 4.36 multiplied by 103 J of work in the process. Calculate the change in internal energy of the gas
A man enters a tall tower, needing to know its height. He notes that a long pendulum extends from the ceiling almost to the floor, How tall is the tower
In the circuit shown in the figure (Figure 1) the current through the 12.0-V battery is measured to be 70.6 mA in the direction shown
An underwater scuba diver sees the Sun at an apparent angle of 28.0° from the vertical. What is actual direction of the Sun
A scientist changes the frequency of an incident X-ray to 4.50e19 Hz and measures the deflected X-ray frequency of 4.32e19 Hz. What was the angle of deflection
A horizontal magnetic field of 1.0 x 10^-4 T is at an angle of 30 degrees to the direction of the current in a straight wire 75 cm long. what is the magnitude of the force on the wire
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