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A heating element in a stove is designed to dissipate 3380 W of heat when it is connected to 200 V. Assuming that the resistance is constant, calculate the current in this element if it is connected to 115 V.
Calculate the power the heating element dissipates at this voltage.
A sample of an unknown material appears to weigh 285 N in air and 180 N when immersed in alcohol of specific gravity 0.700. What is the density of the material
Is the collision completely elastic
A man standing1.54m in front of a shaving mirror produces an inverted image20.0cm in front of it. How close to the mirror should he stand
A diffraction grating with 1000 slits/cm is oriented parallel o the y-axis and its center is located on the x-axis at x = -5.00 m. At how many locations does constructive interference occur on the y-axis
In order to study the long-term effects of weightlessness, astronauts in space must be weighed (or at least "massed"). Find the mass of the astronaut
a transformer has N^1 =350 turns and N^2 =2000 turns. If the input voltage is 170V, what voltage is developed across the secondary coil?
The femur is a bone in the leg whose minimum cross-sectional area is about 4.5 x 10-4 m2. A compression force in excess of 7.7 x 104 N will fracture this bone. Bone has a compression Young's modulus of 9.4 x 10^9 N/m2
A rocket rises with constant acceleration to an altitude of 85 km, at which point its speed is 3.1km/s.what is the acceleration in m/s.
A cannonball is shot (from ground level) with an initial horizontal velocity of 36 m/s and an initial vertical velocity of 21 m/s. What is the initial speed of the cannonball
Light from an argon laser strikes a diffraction grating that has 5345 grooves per centimeter. Determine the wavelength of the laser light
Ted is traveling on his railroad car (length 30 m) at speed v = 0.6 c as shown in the figure. As measured on Alice's clock, how long does it take for Ted's railroad car to pass Alice
consider the bohr model of the one ecectron atom Be+3, calculate the radius,in nm,of ground state orbital
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