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3 years ago

What upward gravitational force does a 5600kg elephant exert on the earth?

2 answers:

8 0

Force is determined by multiplying mass and gravity (F= mg). To determine the answer, the mass of the elephant (5600 kg) is multiplied with the gravity (9.8 m/s²). The answer is 5800 N. This is the upward gravitational force that the elephant exerts on the earth.

Inessa [10]3 years ago

6 0

Answer

54,880 N

Explanation

The Gravitational force is the force exited by an object towards the center of the earth. It is called the weight of an object. The Newton's 2nd law of motion says that for every action there is equal and opposite reaction. So, if the elephant exerts a force on the earth, the earth exerts an equal force to the elephant.

Weight = mass × gravity

= 5600 × 9.8

= 54,880 N

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gladu [14]

For any temperature scale the ratio of difference of temperature will be same

so we can write

$\frac{T^ox - 12^ox}{129^ox - 12^ox} = \frac{T^of - 32^of}{212^of - 32^of}$

now given that in both scales the temperature must be same

$\frac{T^ox - 12^ox}{117^ox} = \frac{T^of - 32^of}{180^of}$

$T - 12 = 0.65 (T - 32)$

$0.35T = -8.8$

$T = -25.14 ^ox$

so at above temperature both scales will have same temperature

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3 years ago

A copper wire loop has a circular shape, with a radius a (see below). The loop is put perpendicularly to the uniform magnetic fi

Luda [366]

Answer:

fem = -A β

Explanation:

Faraday's law gives the induced electromotive source (emf)

fem = $- \ \frac{d \phi_B }{dt}$

the magnetic flux is

$\phi_B$ = B. A = B A cos θ

the bold are vectros. In this case the normal to the ring is parallel to the magnetic field so the angle is zero cos 0 = 1, also the area of the ring is constant

fem = -A $\frac{dB}{dt}$

we carry out the derivative of the function B = α + β t

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5 0

3 years ago

How do distinctive rock strata support the theory of continental drift?

Scorpion4ik [409]

“It states that parts of the Earth's crust slowly drift atop a liquid core. The fossil record supports and gives credence to the theories of continental drift and plate tectonics. ... Continental Coastlines appearing to fit together,Fossil Distrubution, Distinctive Rock Strata, and Coal Distrubution.”

Hope this helps!

~Mia

4 0

3 years ago

A 0.71 W point source emits sound waves isotropically. Assuming that the energy of the waves is conserved, find the intensity (a

sveticcg [70]

Answer:

(a) 2.88×10⁻² W/m²

(b) 8.36×10⁻³ W/m²

Explanation:

The intensity of sound from an isotropic point source, with distance L is given as

I = P/(4πL²) .................................... Equation 1

Where I = intensity of sound, P = Power from the source, L = length, π = pie.

(a)

1.4 m from the source.

I = P/(4πL²)

Given: P = 0.71 W, L = 1.4 m, π = 3.14.

Substitute into equation 1

I = 0.71/(4×3.14×1.4²)

I = 0.71/24.6176

I = 0.0288 W/m².

I = 2.88×10⁻² W/m²

(b) 2.6 m from the source.

Given: P = 0.71 W, L = 2.6 m, π = 3.14

Substitute into equation 1

I = 0.71/(4×3.14×2.6²)

I = 0.71/84.9056

I = 0.00836 W/m²

I = 8.36×10⁻³ W/m²

5 0

4 years ago

A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is

maksim [4K]

D = v^2 / 2ug

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the answer should be around 4.2m

hope this helps

8 0

3 years ago