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3 years ago

7

A person is drawing water from a well, pulling up a bucket that weighs 4.50 kg, at a constant speed. What is the force exerted o

n the bucket by the rope?

1 answer:

TEA [102]3 years ago

5 0

Answer:

44.13015

Explanation:

use the 9.8067 newtons to 1 kg conversion

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A coil has N turns enclosing an area of A. In a physics laboratory experiment, the coil is rotated during the time interval Δt f

scoray [572]

Answer:

BA

0

$\dfrac{NBA}{\Delta t}$

Explanation:

B = Magnetic field

A = Area

$\theta$ = Angle

t = Time taken

Before rotation the magnetic flux is given by

$\phi_i=BAsin\theta\\\Rightarrow \phi_i=BAsin90\\\Rightarrow \phi_i=BA$

Magnetic flux is BA

After rotation the magnetic flux is given by

$\phi_i=BAsin\theta\\\Rightarrow \phi_i=BAsin0\\\Rightarrow \phi_i=0$

The magnetic flux is 0

Magnitude of emf is given by

$\epsilon=NA\dfrac{d\phi}{dt}\\\Rightarrow \epsilon=\dfrac{NBA}{\Delta t}$

The magnitude of the average emf induced in the entire coil is $\dfrac{NBA}{\Delta t}$

4 0

3 years ago

Why do specific heat capacity of objects differ ?

kirill115 [55]

Answer:

substances have different melting and boiling points to one another.

Explanation:

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What current is produced with a voltage of 6.0 V and a resistance of 445 ohms?17.4 mA

san4es73 [151]

Answer:

i Believe its 17.4 mA

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2 years ago

What is the gradual process through which humans change from birth to<br> adulthood?

Whitepunk [10]

Answer:

Growth and Development

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Hydrogen is the second most abundant gas in the atmosphere? True or false?

Alenkinab [10]

False as oxygen is the second most abundant and nitrogen is the most abundant at 78%.

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