Jessie Lee
2021-12-20
Answered

What is the magnitude of the electric field at the point $(3.00i-200j+4.00K)m$ if the electric potential in the region is given by $V=200xy{z}^{2}$ , where V is in volts and coordinates x, y, and z are in meters?

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asked 2021-04-25

A stunt man whose mass is 70 kg swings from the end ofa 4.0 m long rope along thearc of a vertical circle. Assuming that he starts from rest whenthe rope is horizontal, find the tensions in the rope that are required to make him follow his circular path at each of the following points.

(a) at the beginning of his motion N

(b) at a height of 1.5 m above the bottom of the circular arc N

(c) at the bottom of the arc N

(a) at the beginning of his motion N

(b) at a height of 1.5 m above the bottom of the circular arc N

(c) at the bottom of the arc N

asked 2020-11-23

Saturn has an equatorial radius of 6.00 107 mand a mass of 5.67 1026 kg.

(a) Compute the acceleration of gravity at the equatorof Saturn.

(b) What it the ratio of a person's weight on Saturn to that onEarth?

(a) Compute the acceleration of gravity at the equatorof Saturn.

(b) What it the ratio of a person's weight on Saturn to that onEarth?

asked 2020-10-28

A stone hangs by a fine thread from the ceiling,and a section of the same thread dangles from the bottom of the stone.If a person gives a sharp pull on the dangling thread,where is the thread likely to break:below the stone or above it?

asked 2021-02-11

A 95.0kg person stands on a scale in an elevator. What is the apparent weight when the elevator is (a) accelerating upward with an acceleration of 1.80 $\frac{m}{{s}^{2}}$ , (b) moving upward at a constant speed and (c) accelerating downward with an acceleration of 1.30 $\frac{m}{{s}^{2}}$ ?

asked 2021-11-07

A research submarine has a 20-cm-diameter window 8.0 cm thick. The manufacturer says the window can withstand forces up to $1.0\times {10}^{6}$ N. What is the submarine's maximum safe depth in seawater? The pressure inside the submarine is maintaned at 1.0 atm

asked 2020-12-14

A 172-cm-tall person lies ona light (massless) board which is supported by two scales one under the top of her head and ones beneath the bottom of her feet(figure 9-53). The two scales readrespectively 35.1 and 31.6 kg

What distance is the center of gravity of this person from the bottom of her feet?

What distance is the center of gravity of this person from the bottom of her feet?

asked 2022-02-15

A swimmer is capable of swimming 0.42 m/s in still water.

How long will it take her to reach the other side?

If she aims her body directly across a 73- m -wide river whose current is 0.35 m/s , how far downstream (from a point opposite her starting point) will she land?

How long will it take her to reach the other side?

If she aims her body directly across a 73- m -wide river whose current is 0.35 m/s , how far downstream (from a point opposite her starting point) will she land?