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3 years ago

Gina estimates that her moms truck weighs about 6,000 pounds. How can you write 6,000 using exponents?

Physics

2 answers:

Georgia [21]3 years ago

5 0

6x10^3 six times ten to the third power :)

Nookie1986 [14]3 years ago

5 0

Answer:

$6\times 10^{3} Pounds$

Explanation:

Given that the Gina moms truck weight is 6000 pounds.

And we also know that the 6000 pounds can be written as in the form.

$6000=6\times 10\times 10\times 10$

Further more it can be written as,

$6000Pounds=6\times 10^{3} Pounds$

Therefore the weight of the truck which is 6000 Pounds can be written in exponential form as $6\times 10^{3} Pounds$ .

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Determine whether the interference is constructive or destructive at each location indicated.

OlgaM077 [116]

Answer:

A. Constructive

B. Destructive

C. Destructive

D. Constructive

Explanation:

Constructive interference takes place at locations along the path of two superposed waves where the waves are in phase such that a high or low point of one of the waves corresponds with a high or low point of the other wave which gives a resulting wave amplitude which is the sum of the amplitudes of the individual waves

Destructive interference takes place at locations along the path of two superposed waves where one wave is out of phase with the other wave such that a high or low point of one of the waves coincides with a low or high point of the other wave respectively thereby cancelling the effect of the other wave and giving a resulting wave that has an amplitude which is the difference in the amplitudes of the individual waves

Therefore;

At point A, the peak of each wave partially coincides resulting in constructive interference

At point B, the peak of the blue wave and the trough of the red wave partially coincides resulting in destructive interference

At point C, the through of the blue wave and the peak of the back wave partially coincides resulting in destructive interference

At point D, the trough of each wave partially coincides resulting in constructive interference.

6 0

3 years ago

g A coil formed by wrapping 50 turns of wire in the shape of a square is positioned in a magnetic field so that the normal to th

abruzzese [7]

Answer:

L = 182.4 m

Explanation:

Given:-

- The number of turns of the coil, N = 50

- The shape of the coil = square

- The angle between the coil and magnetic field, θ = 30°

- The change in magnetic field, ΔB = ( 700 - 250 ) μT

- The time duration in which magnetic field changes, Δt = 0.3 s

- The induced emf, E = 60.0 mV

Solution:-

- The problem at hand is an application of Faraday's law. The law states that the induced emf ( E ) is proportional to the negative rate of change of magnetic flux ( ΔФ / Δt ) and number of turns of the coil ( N ).

- The Faraday's law is mathematically expressed as:

E = - N* ( ΔФ / Δt )

Where,

- The flux ( Ф ) through a current carrying with an cross-sectional area ( A ) at a normal angle ( θ ) to the direction of magnetic field ( B ) is given by the following relationship.

Ф = B*A*cos ( θ )

- We need the rate of change of magnetic flux ( ΔФ / Δt ) for the Faraday's law. I.e the induced emf ( E ) is proportional to rate of change in magnetic field ( ΔB / Δt ), rate of change of angle between the coil and magnetic field ( Δθ / Δt ) or rate of change of cross-sectional area of the coil under the influence of magnetic field.

- To determine the exact relationship. We will derive the multi-variable function of flux ( Ф ) with respect to time "t":

Ф ( B , A , θ ) = B*A*cos ( θ )

- The first derivative would be ( Use chain and product rules )

( ΔФ / Δt ) = ΔB / Δt*A*cos ( θ ) + B*ΔA/Δt*cos ( θ ) - B*A*sin ( θ )*Δθ/Δt

- For the given problem the only dependent parameter that is changing is magnetic field ( B ) with respect to time "t". Hence, ( ΔA/Δt = Δθ/Δt = 0 ):

ΔФ / Δt = (ΔB/Δt)*A*cos ( θ )

- Substitute the rate of change of magnetic flux ( ΔФ / Δt ) into the expression for Faraday's Law initially stated:

E = - N*(ΔB/Δt)*A*cos ( θ )

- Plug in the values and evaluate the Area of the square coil:

A = - E / ( N*(ΔB/Δt)*cos ( θ ) )

A = - 0.06 / ( 50*[ (250-700)*10^-6/0.3 ] *cos ( 30° ) )

A = - 0.06 / -0.07216

A = 0.8314 m^2

- The square coil has equal sides ( x ). The area of a square A is given by:

A = x^2

x = √0.8314

x = 0.912 m

- The perimeter length of a single coil in terms of side length "x" is given as:

P = 4x

Whereas for a coil of N turns the total length ( L ) would be:

L = N*P

L = 4Nx

L = 4 * 50 * 0.912

L = 182.4 m ... Answer

4 0

3 years ago

Can there be any heat transfer between two bodies that are at the same temperature but at different pressures?

Alenkinab [10]

Answer:

Explanation:

When the two bodies at different temperatures then heat transfer takes place between two bodies. Temperature is the necessary condition for the heat transfer.

The energy can flow due to pressure difference but the heat transfer can not take place only due to pressure difference. Heat transfer needs temperature difference.

Therefore the answer will be No.

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Andrej [43]

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