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3 years ago

Who was the english thinker who established the three laws of motion?.

Physics

1 answer:

Tatiana [17]3 years ago

4 0

Answer:

Isaac Newton

Explanation:

Because i learned this in school

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Increase of green house gases, due to human activity, is warming the oceans. This causes changes in climate. Name three Earth sp

miskamm [114]

The three earth spheres which interact in this process are THE ATMOSPHERE, THE HYDROSPHERE AND THE BIOSPHERE.
The increase in the green house gases is destroying the ozone layers of the atmosphere, this makes it possible for more ultraviolet rays to penetrate through the atmosphere unto the earth surface. The increased temperature provided by these rays is warming up the oceans and this in turn is affecting the animals and the plants that reside in the oceans and those that depend on them. These chains of activities is changing the climate of the world and is affecting all the living things that live on the earth surface.

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3 years ago

A building that is 105.50 ft. feet tall is casting a shadow that is 37.50 ft. feet. If the building next to it, is casting a sha

Arlecino [84]

115.35 ft

Set the proportion up 37.50/105.50 = 41/x and solve for x

7 0

3 years ago

A Van de Graaff generator causes a total charge q to build up on a metal sphere of radius r. Which variable does not affect the

Maru [420]

Answer:

The radius r of the metal sphere.

Explanation:

From Gauss's law we know that for a spherical charge distribution with charge $Q$ , the electrical field at distance $R$ from the center of the sphere is given by

$E=\frac{Q}{4\pi \epsilon_oR^2}$

What is important to notice here is that the radius of the sphere does not matter because any test charge sitting at distance $R$ feels the force as if all the charge $Q$ were sitting at the center of the sphere.

This situation is analogous to the gravitational field. When calculating gravitational force due to a body like the sun or the earth, we take not of only the mass of the sun and the distance from it's center; the sun's radius does not matter because we assume all of its mass to be concentrated at the center.

6 0

3 years ago

Compute the resistance in ohms of a silver block 10 cm long and 0.10 cm2 in cross-sectional area. ( = 1.63 x 10-6 ohm-cm)

Vedmedyk [2.9K]

The resistance of the silver block is given by
$R= \frac{\rho L}{A}$
where
$\rho=1.63 \cdot 10^{-6} \Omega \cdot cm$ is the silver resistivity
$L=10 cm$ is the length of the block
$A=0.10 cm^2$ is the cross-sectional area of the block

If we plug the data into the equation, we find the resistance of the silver block:
$R= \frac{(1.63 \cdot 10^{-6} \Omega \cdot cm)(10 cm)}{0.10 cm^2}=1.63 \cdot 10^{-4} \Omega$

3 0

4 years ago

Describe how the wavelength of a wave changes if the wave slows down but its frequency does not change.

babunello [35]

Answer:

If the wave slows down with no change in frequency, the wavelength decreases.

3 0

3 years ago