159 Answered Questions for the topic physics B

#### What is the magnitude of the total force between the bike tire and the road?

A physicist rides his bike around a corner of radius 21 meters at a steady speed of 7.5 m/sec. The combined mass of the physicist and the bike is 98 kg. The coefficient of static friction between...
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#### flight problem :

Suppose they are two flights one from Tokyo to Turkey and another from Turkey to Tokyo they both start flying at one time (turkey time zone ) .Is the duration for both flights the same (will they...
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#### flight problem :

Suppose they are two flights one from Tokyo to Turkey and another from Turkey to Tokyo they both start flying at one time (turkey time zone ) .Is the duration for both flights the same (will they...
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#### PHYSICS SPEED X VELOCITY

The train moves 60 kilometers forward, and then 30 kilometers backwards. The whole journey takes 5 hours.
What is the distance the train has travelled?
What is the displacement of the train? What...
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15d

#### find average acceleration

An object is moving along the x axis. At t = 5.8 s, the object is at x = +3.0 m and has a velocity of +4.2 m/s. At t = 7.1 s, it is at x = +9.0 m and its velocity is -1.0 m/s. Find the average...
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20d

#### Two particles with charges +6e and -6e are initially very far apart (effectively an infinite distance apart). They are then fixed at positions that are 6.52 x 10-12 m apart.

Two particles with charges +6e and -6e are initially very far apart (effectively an infinite distance apart). They are then fixed at positions that are 6.52 x 10-12 m apart. What is EPEfinal -...
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20d

#### The drawing shows a square, each side of which has a length of L = 0.250 m. Two different positive charges q1 and q2 are fixed at the corners of the square.

The drawing shows a square, each side of which has a length of L = 0.250 m. Two different positive charges q1 and q2 are fixed at the corners of the square. Find the electric potential energy of a...
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20d

#### An empty capacitor is capable of storing 1.0 × 10-4 J of energy when connected to a certain battery. If the distance between the plates is halved and then filled with a dielectric (κ = 3.3),

An empty capacitor is capable of storing 1.0 × 10-4 J of energy when connected to a certain battery. If the distance between the plates is halved and then filled with a dielectric (κ = 3.3), how...
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22d

#### late to class physics question

It normally takes you 11.5 minutes to travel the 6 miles to COD along a straight road. You leave 13 minutes before Physics 2111 class begins. Delays caused by a broken traffic light slow down the...
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22d

#### accelerating objects

An object starts at time t = 0 seconds with a velocity of v0 = +48 m/s and undergoes a constant acceleration of a = -16 m/s2.1) At what time does the speed of the object reach zero? (The object's...
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24d

#### Identical point charges of +3.1 µC are fixed to three of the four corners of a square. What is the magnitude of the negative point charge that must be fixed to the fourth corner,

Identical point charges of +3.1 µC are fixed to three of the four corners of a square. What is the magnitude of the negative point charge that must be fixed to the fourth corner, so that the charge...
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#### Physics (day 2) question #3

A 0.16 kg cricket ball is thrown horizontally at 30 m/s and after it is struck by a cricket paddle, it travels at -30 m/s. If the contact time of the paddle and the ball was 0.0007 seconds, what...
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#### Physics (day 2) Question #1

What is the average acceleration of a 0.16 kg baseball if the average force the bat exerted on the ball is -20,000N?

#### Physics question #1 part b

A 3.75 kg object tied to a string is swung around a person’s head in a horizontal circle. The length of the string is 1.0 m and the maximum force the string can withstand without breaking is 25.0...
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08/20/20

#### Ventilation of a thick, metal Faraday Cage/Physics or Engineering question

How can you permit airflow in a faraday cage built of thick metal that shields high and low frequencies?

#### The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 12 m/s at an angle 47 degrees

Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 12 m/s at an angle 47 degrees; with respect to the horizontal....
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#### Ted Williams hits a baseball with an initial velocity of 120 miles per hour (176 ft/s) at an angle of θ = 35 degrees to the horizontal.

Ted Williams hits a baseball with an initial velocity of 120 miles per hour (176 ft/s) at an angle of θ = 35 degrees to the horizontal. The ball is struck 3 feet above home plate. You watch as the...
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#### A blue ball is thrown upward with an initial speed of 23.5 m/s, from a height of 0.7 meters above the ground. 2.9 seconds

A blue ball is thrown upward with an initial speed of 23.5 m/s, from a height of 0.7 meters above the ground. 2.9 seconds after the blue ball is thrown, a red ball is thrown down with an initial...
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#### A tortoise and hare start from rest and have a race. As the race begins, both accelerate forward. The hare accelerates uniformly at a rate of 0.9 m/s2 for 4.5 seconds.

A tortoise and hare start from rest and have a race. As the race begins, both accelerate forward. The hare accelerates uniformly at a rate of 0.9 m/s2 for 4.5 seconds. It then continues at a...
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Physics B Calculus

07/09/20

#### Photography Maximum Angle

A photographer is taking a picture of a 4-foot painting hung in an art gallery. The cameralens is 1 foot below the lower edge of the painting. How far should the camera be fromthe painting to...
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#### hello to all the best tutors here !

I have recently a problem with one of the fundamental of physics book which is chapter 31 and i cant really solve the problems specially the RLC circuits , is there anything i can do for...
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Physics B Physics

06/25/20

#### please answer this :

As a loop of wire with a resistance of 10 moves in a constant non-uniform magnetic field,it loses kinetic energy at a uniform rate of 5 mJ/s. The induced current in the loop:

Physics B Physics

06/22/20

#### please answer :

A solenoid is 3.0 cm long and has a radius of 0.50 cm. It is wrapped with 500 turns of wirecarrying a current of 2.0 A. The magnetic field at the center of the solenoid is:

Physics B Physics

06/22/20

#### please answer :

Two parallel wires, 4 cm apart, carry currents of 2 A and 4 A respectively, in the samedirection. The force per unit length in N/m of one wire on the other is:

Physics B Physics

06/21/20

#### please answer this :

In a certain mass spectrograph, an ion beam passes through a velocity filter consisting ofmutually perpendicular fields E and B. The beam then enters a region of another magnetic fieldB '...
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