P As part of a physics experiment, you stand on a bathroom scale in n elevator. Though your normal weight is 630 N , the scale at the noment reads 750 N Part A Is the acceleration of the elevator upward, downward, or zero? O Upward O Downward O Zero Submit Request Answer Part B Calculate the magnitude of the elevator's acceleration. Express your answer using two significant figures. ? a = m/s² Submit Request Answer

P As part of a physics experiment, you stand on a bathroom scale in n elevator. Though your normal weight is 630 N , the scale at the noment reads 750 N Part A Is the acceleration of the elevator upward, downward, or zero? O Upward O Downward O Zero Submit Request Answer Part B Calculate the magnitude of the elevator's acceleration. Express your answer using two significant figures. ? a = m/s² Submit Request Answer

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

Two packing crates of masses m, = 10.0 kg and m2 = 3.00 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The 3.00 kg crate lies on a smooth incline of angle 42.0°. Find the acceleration of the 3.00 kg crate. m/s2 (up the incline) Find the tenslon in the string. N
Suppose the force of air resistance is proportional to the speed of the object and in the direction opposite the object's velocity. If you throw an object upward, when is the magnitude of the object's acceleration highest? A. It is highest at the top of its trajectory. B The acceleration of the object is the same throughout the entire trajectory. No answer text provided. It is highest right after the object is released.
A woman stands on a scale in a moving elevator. Her mass is 72.0 kg, and the combined mass of the elevator and scale is an additional 815 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9390 N. What does the scale read during the acceleration? N
A rocket with a mass of 2.70x106 kg exerts a vertical force of 3.40×107 N on the gases it expels. ▼ Part A Determine the acceleration of the rocket. Assume g remains constant, and ignore the mass of gas expelled (not realistic). Express your answer using two significant figures. VE ΑΣΦ Submit Dart R Request Answer ? m/s²
m A block of mass m = 10.46 kg is at rest on a friction-less table. A student comes 0 = along and presses on the book with an unknown force F, at an angle 6= 23.9° as shown in the figure. If the acceleration is 8.11 m/s2, with how much force (in N) is the student pressing? %3D Your Answer:
d. Force is a vector quantity and thus has both a magnitude and a direction. A vector can be represented graphically by a line drawn to scale in the direction of the line of action of the force. To distinguish between vector and scalar quantities, various ways are used. Identify and explain threeof these ways.
Boxes A and B are in contact on a horizontal, frictionless surface (Figure 1). Box A has mass 25.0 kg and box B has mass 5.0 kg. A horizontal force of 130 N is exerted on box A. Figure A B 1 of 1 Part A What is the magnitude of the force that box A exerts on box B? Express your answer with the appropriate units. F = Submit LON μα Value Request Answer < Return to Assignment Units Provide Feedback MacBook Air ?
An adventurous model got bored and decided to try something new. She went out to the top of a steep icy road and went down on a sled. If friction is so small that it can be neglected, which of the following statements correctly describes the physics in the situation? Ad B C Only gravity acts on the model-sled between points A and B. The model-sled experiences no acceleration between A and C. The sled will stop somewhere near B. There is no force acting on the model-sled between points B and C. The sled will continue moving with constant speed from B onwards.
A car has a mass of 1500 kg. If the driver applies the brakes while on a gravel road, the maximum friction force that the tires can provide without skidding is about 7000 N. Part A If the car is moving at 21 m/s, what is the shortest distance in which the car can stop safely? Express your answer with the appropriate units. Ax= μÅ Value Units ****** ?
6 m 1.0 m T3 2 m T2 3 m 2 m 2 m The magnitude of one of the forces is T2 = 80 kN. Find the rectangular representation of T2. * The magnitude of one of the forces is T2 = 80KN. Find the rec tan gular representation of T2. O T2 = (-22.86 i – 34.29 j + 68.57 k) N O T2 = (22.86 i – 34.29 j + 68.57 k) N %3D O T2 = (22.86 i – 34.29 j – 68.57 k) N O T2 = (-22.86 i + 34.29 j + 68.57 k) N ----
Å A student tries to push a 27.7 kg desk across the room. She pushes at a downward angle of 39° (measured from the horizontal) with a force of 240 N. As a result, the desk moves with a constant velocity of 1.22 m/s. How much friction is present? F₁ = How much does the desk weigh? 11 N FN = Fg How much Normal force must be present? N N
Newton's first law states that: Group of answer choices Ia. n the absence of any net force acting on it, a mechanical system is necessarily at rest. b. In the absence of a non-zero net force acting on it, a mechanical system keeps moving in the same direction at the same speed (including the case v=0). c. For any pair A/B of objects interacting with one another, the force of A acting on B is the equal-opposite of the force of B acting on A. d. The rate of change of the velocity of a system is proportional to the net force acting on it.