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A shaving/cosmetic mirror is designed to magnify your face by afactor of 1.3 when your face is placed 20.0 cm in front of it. Usethe mirror equation and the ray diagrams to answer, what is the focal length and the radius of curvature of the mirror?
A He-Ne laser produces light of wavelength 633 nm with intensity 1.09 103 W/m2, over a beam of cross-sectional area 1.04 mm2. How many photons per second are emitted by the laser
A box of sand, initially at rest, is to be pulled across a floor by means of a cable in which the tension cannot be allowed to exceed 1100N. What should be the angle between the cable and the box in order to pull the greatest mass of sand
A fisherman notices that his boat is moving up and down periodically, owing to waves on the surface of the water. What is the amplitude of each wave
A race car is moving with a velocity of 144 kilometers/hour. The driver applies the brakes, and the car comes to a halt in 12.0 seconds. What is the acceleration of the car after 12.0 seconds? A. -12 m/s^2 B. -3.3 m/s^2 C. 3.3 m/s^2 D. 10.3 m/s^2
An elevator at the CN Tower in Toronto, Canada, What is the minimal power required for the motor of the elevator
A proton is accelerated from rest by a potential difference of 335 V. The proton enters a uniform magnetic field and follows a circular path of radius 25 cm. Determine the magnitude of the magnetic field. 1
A copper sheet of thickness 3.90 mm is bonded to a steel sheet of thickness 4.40 mm. The outside surface of the copper sheet is held at a temperature of 170.0 °C and the steel sheet at 34.0 °C.
Calculate the semimajor of a moon on a synchronous orbit around Mars. Express your answer in martian radii (Rmars) from the center of the planet. compare this distance with the orbits of phobos (at 2.76 Rmars) and Deimos (at 6.9 Rmars).
A house is 30.0 ft long and 32 ft wide, and has 8.0 ft high ceilings. What is the volume of the interior of the house
he New England Merchants Bank Building in Boston is 152m high. On windy days it sways with a frequency of 0.20Hz, What is the total distance, side to side, that the top of the building moves during such an oscillation
A particle's trajectory is described by x=(12t3?2t2)m and y =(12t2?2t)m, What is the particle's direction of motion, measured as an angle from the x-axis, at t=5.0s
find the velocity of the plane relative to the ground.
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