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kumpel [21]
3 years ago
10

What units would you use to measure time that has elapsed?

Physics
1 answer:
dedylja [7]3 years ago
6 0
You would use seconds as seconds is a unit of time
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Two objects have the same momentum. Which of the following is true? I. The masses of the objects are equal. Ii. The speeds of th
Vaselesa [24]

Answer:

Iv. The direction of motion of each object is the same.

Explanation:

Momentum of an object is defined as:

p= mv

where

m is the mass of the object

v is its velocity

Since v is a vector, it follows that p is also a vector, and it has the same direction of the velocity. This means that if two objects have same momentum, then the direction of their momentum vector is also the same: therefore, the direction of motion of each object must be the same.

The other options are wrong, because they just state that only one of the two quantities involved in the equation (mass or velocity) is the same, but the two objects can actually have the same momentum even if they have different masses and velocities (in fact, the only thing that matters is that the product between mass and velocity is the same).

3 0
4 years ago
According to Kepler's third law (p2 = a3), how does a planet's mass affect its orbit around the Sun? Group of answer choices
anyanavicka [17]

Answer:

A planet's mass has no effect on its orbit around the Sun.

Explanation:

The kepler's third law tells us:

p^2=a^3

where p is the orbit period and a is the semi-major axis.

As we can see from the equation, the period depends only on the measure of the semi-major axis a of the orbit, that is, how far a planet is from the sun.

The equation tells us that the closer a planet is to the sun, the faster it will go around it.

The mass does not appear in the equation to calculate the period.

This is why it is concluded from the third law of Kepler that<u> the period, or the orbit of a planet around the sun, does not depend on its mass.</u>

the answer i: A planet's mass has no effect on its orbit around the Sun.

3 0
3 years ago
HELP!! ME pls which Which of the following graphs correctly shows the relationship between KE and VELOCITY? *
faltersainse [42]

Answer: Option 3.

Explanation:

Formula for kinetic energy is

K.E = (1 / 2) * (m * v ^ 2)

Assuming mass to be constant,

We can see that K.E is proportional to v^2.

It means that when you substitute the value of velocity in v, kinetic energy increases with v^2.

Option 1 and 2 are eliminated because the relationship between kinetic energy and velocity in the graph is shown as linear. We already know from formula that the relationship is not linear.

Option 4 is incorrect because kinetic energy must be zero when velocity is zero. This graph shows kinetic energy is becoming infinite as velocity tends to 0.

So option 3 is correct answer.

3 0
3 years ago
Why can't 41 be represented in a binary table?
Airida [17]

Answer:

I think it is but I don't know for sure

Explanation:

41 101001

41 is 101001 on the binary table i think

8 0
3 years ago
Compare the de Broglie wavelength of a golf ball moving at 70.0 miles per hour (31.3 m/s) to that of an alpha particle moving at
sergiy2304 [10]

Answer:

1. Golf ball is in the range of only particulate detectable range

2, alpha partcle is in ultraviolet range of wavelength

3.bullet is in xray range of wavelength

All in the EMW spectrum

6 0
3 years ago
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