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A concave makeup mirror is designed so that a person 22 cm in front of it sees an upright image magnified by a factor of two. What is the radius of curvature of the mirror?
R = m
A charge +q is at the origin. A charge -2q is at x = 9.10 m on the +x axis. (a) For what finite value of x is the electric field zero? (b) For what finite values of x is the electric potential zero? (Note: Assume a reference level of potential V =..
A 2.50 cm by 2.50 cm parallel-plate capacitor has a 2.30 mm spacing. The electric field strength inside the capacitor is 6.00×10^4. What is the potential difference across the capacitor
Ideally, when a thermometer is used to measure the temperature of an object, the temperature of the object itself should not change. What was the temperature of the water before the insertion of the thermometer
A microscope has an objective lens with a focal length of 16.22 mm and an eyepiece with a focal length of 9.72 mm. what is the actual diameter of the red blood cell
Water flows straight down from an open faucet. The cross-sectional area of the faucet is 1.9 × 10-4m2, find the cross-sectional area of the water stream at a point 0.09 m below the faucet
A 30uF capacitor initially charged to 30uC is discharged through a 2.9kohms resistor. How long does it take to reduce the capacitor's charge to 9.0uC
Assuming that the acceleration is uniform when the racquet is applied over a distance of 0.52 m, illustrate what is the magnitude of the force exerted on the ball by the racquet?
When a 9.0 cm long pencil is arranged perpendicular to a convex mirror's optical axis at a distance of 22 cm from the mirror, How tall is the pencil's image if the pencil is moved to a distance of 50 cm from the mirror
An electron is initially at rest just outside a large copper surface that has the charge density of 1.20 x10-6 C/m2. How far has the electron moved in 1.07 x10-9 s if the field is uniform over this region.
How much work is done by the Moon's gravitational field as a 900 kg meteor comes in from outer space and impacts on the Moon's surface
You are standing on the ground at the origin of a coordinate system. An airplane flies over you with constant velocity parallel to the x axis and at a constant height of 9.00 103 m. At t = 0, the airplane is directly above you so that the vector l..
A circular solenoid contains 100.0 turns of wire and carries a current of 2.0 amps. Calculate the magnetic flux through one turn of the wire
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