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Sedbober [7]
3 years ago
7

Four students travelling to a sporting event make a

Physics
1 answer:
KIM [24]3 years ago
6 0
The displacement for wrong directions is 6.6 km
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Suppose you wanted to use the Earth's magnetic field to make an AC generator at a location where the magnitude of the field is 0
Likurg_2 [28]

Answer:

The angular velocity I would have to rotate it in order to generate an emf of amplitude 1.0 V is 254.65 rad/s

Explanation:

given information:

B = 0.5 mT = 0.0005 T

N = 1000

r = 5 cm = 0.05 m

emf, ε = 1 V

according to Faraday's law

ε = -N dΦ/dt, Φ = B A

  = - N d( B A)/dt

  = - N d( B A cos ωt)/dt

   = - N B A d(cos ωt)/dt

   = N B A ω sin ωt

A = πr², so

ε = N B πr² ω sin ωt

where

ε = emf

N = number of coil turn

B = magnetic field

r = radius

ω = angular velocity

Φ = magnetic flux

emf maximum, sin ωt = 1. So,

ε = N B πr² ω

ω = ε/N B πr²

   = 1/[(1000) (0.0005) π (0.05)²

   = 254.65 rad/s

6 0
4 years ago
Arnold Schwarzenegger is moving out of his California mansion. He pushes a box of books on the floor with a force of 50 N to the
sleet_krkn [62]
A.draw in the forces .Use the scale 1cm =10n of force 
3 0
4 years ago
Assume you live in a Einsteinian universe with the speed of light being only 60 k /hr. First you see a bicyclist at rest and lat
Free_Kalibri [48]
<span>The answer is that, Mass, time, and length are the quantities that would change considering the speed of light as the limit. In Einstein's equations it depends on velocity as a fraction of the speed of light.

we can take example as,
Appeared length = rest length x </span><span>(1-u</span>²<span>)</span>⁽¹/²⁾ 
<span>in this u is the velocity as a fraction of the speed of light. </span>
4 0
3 years ago
a 2kg mass is held 4m above the ground. what is the approximate potential energy of the mass with respect to the ground?
aleksley [76]

The potential energy of the object is 78.4 J

Explanation:

The gravitational potential energy (GPE) of an object is the energy possessed by the object due to its position in a gravitational field.

For an object near the Earth's surface, the GPE is given by:

GPE=mgh

where

m is the mass of the object

g=9.8 m/s^2 is the acceleration of gravity near the Earth's surface

h is the height of the object relative to the surface

For the object in this problem,

m = 2 kg

h = 4 m

Substituting, we find its GPE:

GPE=(2)(9.8)(4)=78.4 J

Learn more about potential energy:

brainly.com/question/1198647

brainly.com/question/10770261

#LearnwithBrainly

6 0
4 years ago
What element is a halogen with 5 energy levels
zhenek [66]

Answer:

astatine

Explanation:

Sorry if this is wrong i am not a hundred percent sure.

7 0
4 years ago
Read 2 more answers
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