Mastering Physics Solutions: Suspending a Speaker

Mastering Physics Solutions: Suspending a Speaker

On September 25, 2013, in Chapter 04: Force and Motion, by Mastering Physics Solutions

Part A = 365 N

What is the tension T in each of the cables?

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Mastering Physics Solutions: Motion of a Block with Three Forces

Mastering Physics Solutions: Motion of a Block with Three Forces

On September 21, 2013, in Chapter 04: Force and Motion, by Mastering Physics Solutions

Part A = 1.83 N Click to use the calculator/solver for this part of the problem
Part B = -73° Click to use the calculator/solver for this part of the problem
Part C = 0.92 m/s2 Click to use the calculator/solver for this part of the problem
Part D = -73° Click to use the calculator/solver for this part of the problem
Part E = 11 m Click to use the calculator/solver for this part of the problem
Part F = 4.6 m/s Click to use the calculator/solver for this part of the problem
Part G = -73° Click to use the calculator/solver for this part of the problem

Calculate the magnitude of the total resultant force Fr = F1 + F2 + F3 acting on the mass.
What angle does Fr make with the positive x axis?
What is the magnitude of the mass’s acceleration vector, a?
What is the direction of A? In other words, what angle does this vector make with respect to the positive x axis?
How far (in meters) will the mass move in 5.0 s?
What is the magnitude of the velocity vector of the block at t = 5.0 s?
In what direction is the mass moving at time t = 5.0 s? That is, what angle does the velocity vector make with respect to the positive x axis?

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Mastering Physics Solutions: Arrow Hits Apple

Mastering Physics Solutions: Arrow Hits Apple

On September 17, 2013, in Chapter 03: Motion in Two Dimensions, by Mastering Physics Solutions

Part A = 6.70 s
Part B = 5.59 s

Find the time that the arrow spends in the air.
Suppose someone drops an apple from a vertical distance of 6.0 meters, directly above the point where the arrow hits the tree. How long after the arrow was shot should the apple be dropped, in order for the arrow to pierce the apple as the arrow hits the tree?

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Mastering Physics Solutions: A Canoe on a River

Mastering Physics Solutions: A Canoe on a River

On September 17, 2013, in Chapter 03: Motion in Two Dimensions, by Mastering Physics Solutions

Part A = 0.4018 m/s
Part B = 75.43 °

Find the magnitude of the velocity of the canoe relative to the river.
Find the direction of the velocity of the canoe relative to the river.

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Mastering Physics Solutions: Speed of a Softball

Mastering Physics Solutions: Speed of a Softball

On September 16, 2013, in Chapter 03: Motion in Two Dimensions, by Mastering Physics Solutions

Part A = 18.77 m/s
Part B = 31.50 °
Part C = 16.0, -8.82 m/s

Find v0. Use g = 9.807 m/s2 for the magnitude of the acceleration due to gravity.
Find the angle in degrees.
Find a vector expression for the velocity v of the softball 0.1 s before the ball is caught.
Find a vector expression for the position r of the softball 0.1 s before the ball is caught.

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Mastering Physics Solutions: Magnetic Force Vector Drawing

Mastering Physics Solutions: Magnetic Force Vector Drawing

On May 9, 2012, in Chapter 19: Magnetism, by Mastering Physics Solutions

Part A = See below
Part B = See below
Part C = See below

For each of the situations below, a charged particle enters a region of uniform magnetic field. Draw a vector to represent the direction of the magnetic force on the particle.

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