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A 2.70-cm-high object is situated 18.5 cm in front of a concave mirror that has a radius of curvature of 8.06 cm. Calculate the location and the height of the image.
About 1350 W/m2 of electromagnetic energy reaches the upper atmosphere of the earth from the sun, which is 1.5 × 1011 m away. estimate the average power output of the sun
A plane flies 429 km east from city A to city B in 45.0 min and then 969 km south from city B to city C in 1.40 h, find its average speed (in km/h)
A small block with a mass of 0.120kg is attached to a cord passing through a hole in a frictionless, horizontal surface. The block is originally revolving at a distance of 0.50 m from the hole with a speed of 0.70m/s. The cord is then pulled from ..
A skateboarder, starting from rest, rolls down a 13.1-m ramp. If the ramp is inclined at 26.5 ° with respect to the ground, what is the component of her acceleration that is parallel to the ground
You put a kettle on to boil and forget about it so that all the water boils away. what is the change in entropy of the water once it has all turned to steam
Assume that the sun runs out of nuclear fuel & suddently collapses to form a white dwarf star, with a diameter equal to that of the Earth. Estimate the new rotation period of the Sun.
Assume that the Sun radiates like an ideal thermal source at a temperature of 6000 K, What is the intensity of the solar radiation emitted in the range 550.0 nm to 552.0 nm
A 1,576-kg car is moving down a road with a slope (grade) of 11% while speeding up at a rate of 3.6 m/s^2. What is the direction and magnitude of the frictional force
An electromagnetic wave propagates along the +y direction, If the magnetic field at the origin is along the +x direction, what is the direction of the electric field
A pilot having mass M(kg) flies a plane in a vertical loop with a radius of 800m at a constant speed of 500 km/h. Determine the force exerted on the pilot by the seat at both the top and bottom of the loop
It takes a student t = 7.6 s to push a block m = 11 kg at a constant velocity over a distance of d = 8.2 m. Write an expression for the energy required to move the block along this path in terms of the variables provided
At what distance from the ring's center is E maximum. How deep is the tank.
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