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A 3.00 kW space heater designed for use in a European country where the rms voltage is 225V is being used in a US household wher ethe rms voltage is 110.0 V. Ignoring the effect of temperature on the heater's resistance, determine the power output of the heater in the American household. Find also the peak currents through the heater in the two households.
a blue ball is thrown upward with an initial speed of 23.2 ms from a height of 0.6 meters above the ground. 2.8 seconds
The space shuttle is in a 400km - high circular orbit. It needs to reach a 700 km -high circular orbit to catch the Hubble Space Telescope for repairs. how much energy is required to boost it to the new orbit
A 4 kg wooden block is at rest on a tabletop. A 0.03 kg bullet enters the block going at 800 m/s. How much time was the bullet in the block
Consider a disk of radius 3 centimeter having a uniformly distributed charge of 5.20 (µC). Find the electric field at a point on the axis and 3 millimeter from the center
A pipe is horizontal and carries oil that has a viscosity of 0.15 Pa · s. The volume flow rate of the oil is 5.8 10-5 m3/s. What is the absolute pressure at the input end
Batteries are rated in terms of ampere-hours (A · h). For example, a battery that can produce a current of 3.00 A for 5.00 h is rated at 15.00 A · h.
A siren is made by blowing a jet of air through 20 equally spaced holes in a rotating disk. Compute what must be the angular speed ω (in rad/s) of the disk
An object is initially moving with a speed of 10.0 m/s in the direction 60.0 degrees N of E. What is the magnitude and direction of the displacement of the object during the ten second interval
Unpolarized light is incident on a stack of two polarizing sheets. At what angle should the transmission axes of all polarizer be oriented (by respect to each other) so that only 1/3 of the incident intensity is transmitted?
Plane-polarized light passes through two polarizers whose axes are oriented at 37.0 degrees to each other.If the intensity of the original beam is reduced to 14.55 , what was the polarization direction of the original beam, relative to the first pola..
An apartment has a living room whose dimensions are 2.9 m x3.9 m x 6.0 m. what is the mass (in grams) of the air
Sodium light (589.3 nm) from a narrow slit illuminates a Fresnel bi-prism made of glass of refraction index 1.5. What is the biprism angle
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