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The upward normal force exerted by the floor is 670N on an elevator passenger who weighs 710N . A) What is the reaction force to the upward normal force exerted by the floor? B) What is the reaction force to weight of the passenger? C) What is the magnitude of the acceleration? D)What is the direction of the acceleration?
A 56.0 kg ice skater spins about a vertical axis by her body with her arms horizontally outstretched, making 1.50 turns each second. The distance from one hand to the other is 1.5 m . Biometric measurements indicate that each hand typically makes ..
Two point charges are separated by d= 10 cm and have charges of q1= +2(mu)C and q2= -2 (mu)C, respectively, What is the magnitude of the electric force between the two charges
A dentist's drill starts from rest. After 3.20 s of constant angular acceleration it turns at a rate of 2.3 104 rev/min. Find the drill's angular acceleration
A sinusoidal wave traveling in the positive x-direction has a wavelength of 11 cm, a frequency of 13 Hz, and an amplitude of 19 cm. The part of the wave that is at the origin at t = 0 has a vertical displacement of 6 cm.
When you take your 1400-{\rm kg} car out for a spin, you go around a corner of radius 52 m with a speed of 11 m/s. what is the force exerted on it by static friction
At 12 breaths/min, on a dry day when the inhaled air has almost no water content, what is the body's rate of energy loss (in J/s) due to exhaled water
Two ropes are attached to a heavy box to pull it along the floor. One rope applies a force of 438 newtons (N) in a direction due west; the other applies a force of 402N in a direction due south.
A tile is dropped at a height of 12 Meters. The tile has a mass of 2.5kg. Calculate the final speed of the tile
A pill bottle 3.0 cm tall is placed 12 cm in front of a mirror. An upright image 9.0 cm tall is formed. What kind of mirror is this, and what is its radius of curvature?
A freezer of resistance 14.5ohms is connected to a 110V source. What is the power delivered when this freezer is on
Vector A is in the direction 44.0 clockwise from the negative y-axis. The x-component of is = -19.0 What is the -y component of A? What is the magnitude of A.
A steel beam is placed vertically in the basement of a building to keep the floor above from sagging. Find the vertical compression of the beam
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