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NeTakaya
2 years ago
12

Why is an element considered a pure substance?

Physics
1 answer:
anastassius [24]2 years ago
3 0

Answer:

An element is a pure substance and is made of only one type of atom.

Explanation:

It cannot be broken down into a simpler substance.

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A young girl gives her toboggan a push of 4.0m/s uphill. It slides up the hill slowing down at an acceleration of 8.0m/s down. I
vivado [14]
It takes 30 seconds for the whole journey
5 0
3 years ago
When more than one wave is in the same location at the same time, then there is _____ between the waves?
igor_vitrenko [27]
The sentence can be completed as follows:
"<span>When more than one wave is in the same location at the same time, then there is interference between the waves"

In fact, when there are two or more waves in the same location at the same time, their amplitude sum together. The two extreme possibilities are:
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4 0
3 years ago
A constant net torque is applied to an object. Which one of the following will NOT be constant?
love history [14]

Answer:

B) Angular velocity

Explanation:

The equivalent of Newton's second law for the rotational motions can be written as:

\tau = I \alpha

where

\tau is the net torque applied to the object

I is the moment of inertia

\alpha is the angular acceleration

From the formula we see that when a constant net torque \tau is applied, then the object also has a constant angular acceleration, \alpha.

But we also know that

\alpha = \frac{d\omega}{dt}

where \omega is the angular velocity: so, a constant angular acceleration means that the angular velocity of the object is changing, so the correct answer is

B) Angular velocity

(moment of inertia and center of gravity do not change since they only depend on the mass and the geometry/shape of the object, which do not change)

7 0
3 years ago
An object moving at a velocity of 32 m/s slows to a stop in 4 seconds. What was its acceleration
Leya [2.2K]

Answer:

8

Explanation:

Because you divide 32/4 which gives you 8.

6 0
3 years ago
A measure of randomness or disorder
vodka [1.7K]
It is simply called Entropy.

3 0
3 years ago
Read 2 more answers
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