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zach, whose mass is 90kg , is in an elevator descending at 14m/s . The elevator takes 3.0s to brake to a stop at the first floor. What is Zach's apparent weight while the elevator is braking?
The objects are then released from rest. Assuming that the particles never reach the pulley, and also that the particles do not rebound when they strike the ground.
The semiconducting compound CdTe is widely used for infrared light emmiting diodes (LEDs). find the frequency of light emitted by a CdTe LED
Two very large parallel plates are oppositely and uniformly charged. The field among the plates is 1.7×106N/C. How dense is the charge on each plate (in C/m2)?
The amplitude of the voltage across an inductor can be greater than the amplitude of the generator emf in an RLC circuit. Consider an RLC circuit with Epeak = 50 V, R = 14, L = 1.05 H, and C = 1.12 µ F. Find out the amplitude of the voltage across th..
a spaceshipmo 10000 kg amp lo 42m is observed to be 42.2m long while traveling towards earth determine the speed of
A charge of 3.45 µC is uniformly distributed on a ring of radius 9.5 cm. Find the electric field strength on the axis at the following locations. (a) 1.2 cm from the center of the ring N/C (b) 3.1 cm from the center of the ring N/C (c) 4.0 m from ..
While hiking through a canyon, Jack lets out a scream. An echo (reflection of the scream off a nearby canyon wall) is heard 1.3 seconds after the scream. The speed of the sound wave in air is 345 m/s. Calculate the distance from Noah to the nearby..
A metallic sphere has a charge of +4.2 nC. A negatively charged rod has a charge of -6.0 nC. When the rod touches the sphere, 9.8 109 electrons are transferred. What are the charges of the sphere and the rod now?
q1. a 59.0 kg pole vaulter running at 9.5 ms vaults over the bar. if the vaulters horizontal component of velocity over
The amount of heat per second conducted from the blood capillaries beneath the skin to the surface is 260 J/s. The energy is transferred a distance of 1.8 × 10-3 m through a body whose surface area is 1.3 m2. Assuming that the thermal conductivity..
The potential difference between the plates of a capacitor is 247 V. Midway between the plates, a proton and an electron are released. find the initial speed of the proton
1. What is the current flowing through a resistor with a resistance of 17000 Ohms if there is an electrical potential difference of 220 Volts across the resistor.2. In terms of a circuit, what would an infinite resistance correspond to?3. What value ..
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