Master Physics with Fun Quizzes & Brain Teasers!

Ritalin and the pain medication Demerol have a high risk of dependence but may be used for medicinal purposes under a doctor's supervision. These substances are _____ of the CSA list.
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Puck A and puck B are free to slide without friction on a horizontal air table; the mass of puck A has been measured to be 165. 0 grams , but the mass of puck B is unknown. The pucks are made of super-ball like material, so any collision between them should be elastic. An experiment is done with puck B at rest at the center of the air table, and with puck A sent at 55. 0 cm/s to make a glancing collision with puck B. After the collision, puck A is measured to have a speed of 29. 0 cm/s , and is observed to have been deflected by 27. 0 degrees from its original direction. What was the y component of puck B's momentum after the collision?
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If five equal resistors dissipate a total of 10 W in a series circuit, how much power does each resistor dissipate
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Compare the electric force experienced by an electron in the hydrogen atom to the gravitational force experienced by the electron
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. a tire 0.500 m in radius rotates at a constant rate of 200 revolutions per minute. find the speed and acceleration of a small stone lodged in the tread of the tire
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The diffraction grating has 50 slots per millimeter. At what angle isthe maximum of the first row seen when a wavelength of 400 nmfalls perpendicular to the grid?Please I really need your help
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Your camera's zoom lens has an adjustable focal length ranging from 80.0 to 205 mm. what is its range of powers (in d)
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A box is suspended by a rope. when a horizontal force of 100 n acts on the box, it moves to the side until the rope is at an angle of 20 degree with the vertical. the weight of the box is.
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A traffic fanatic wants to estimate the maximum number of cars that can safely travel on a particular road at a given speed. She assumes that each car is 18 feet long, travels at speed s, and follows the car in front of it at a safe distance for that speed. She finds that the number N of cars that can pass a given spot per minute is modeled by the function N(s)
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Three capacitors, with capacitances of c1 = 2.0 f, c2 = 3.0 f , and c3 = 6.0 f, respectively, are connected in parallel. a 500-v potential difference is applied across the combination. determine the voltage across each capacitor and the charge on each capacitor
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Two electrons (-1.6 x 10-1c) in an atom are separated by 3.4 x 10-11 m. what is the electrostatic forcebetween them? is it attractive or repulsive?
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During the Vector Addition lab, Mac and Tosh start at the classroom door and walk 35. 0 m, north, 65. 0 m east, 54. 5 m south, 30. 5 m west, and 4. 5 m, north. Determine the magnitude and direction of the resultant displacement of Mac and Tosh
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A harmonic wave travels in a wire with amplitude 2.51 mm, wavelength 1.09 m, and frequency 649 hz. what is the speed with which the wave travels
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1. Which property distinguishes all electromagnetic waves from mechanical waves, such as sound waves and water waves? A. The ability to travel in a vacuumB. Very short wavelength C. Oscillations that are perpendicular to the direction of motionD. Oscillations that are parallel to the direction of motionPLEASE HELP
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A force compresses a bone by 1. 0 mm. A second bone has the same cross-sectional area but twice the length as the first. By how much would the same force compress this second bone
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4) You are a passenger on a spaceship. As the speed of the spaceship increases, you would observe that A) the length of your spaceship is getting shorter. B) the length of your spaceship is getting longer. C) the length of your spaceship is not changing
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A spring is stretched 0. 50 m and the force was 30000 N. What is the spring constant?
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If three crests pass Pin in one second, the wavelength is?
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A beam of light travels into a new denser medium causing the speed of light to change to 2.5 x 10 8 m/s. what is the index of refraction for the new medium?
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A tourist follows a passage which takes her 160 m west, then 180 m at an angle of 45. 0 south of east and finally 250 m at an angle 35. 0 north of east. The total journey takes 12 minutes. a. Calculate the magnitude of her displacement from her original position. (4)b. She measures the distance she has walked to a precision of 5%. She times her total journey to 20 s. (i) What is her average speed?(ii) What is the absolute uncertainty on her absolute speed?
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Two forces, both in the x-y plane, act on a 3.25-kg mass that accelerates at 5.48 m/s2 in a direction 38.0 counterclockwise from the x-axis. one force has a magnitude of 8.63 n and points in the +x-direction.part afind the other force as x- and y-components.fx,fy = ? n please help!
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What is the maximum speed of a point on the outside of the wheel 15 cm from the axle?.
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Two devices of rating 22 W; 220 V and 11 W; 220 V are connected in series. The combination isconnected across a 440 V mains. The fuse of which of the two devices is likely to burn whenswitch is on ? Justify your name.
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a predatory bird is chasing its prey at 15.3 m/s when it emits a 202 hz squawk. ifthe prey is moving away from the predator at 13 m/s, what frequency will it hear ifthe air temperature is 27 c?
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