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salantis [7]
3 years ago
6

Is kevin Showing work help him please​

Physics
1 answer:
7nadin3 [17]3 years ago
4 0

Answer:

I believe it is not a chemical change for the components are not changing.

This excerpt from thoughtco.com states that for it to be a chemical change, the atoms would be rearranged.

<em>In other words, a chemical change is a chemical reaction involving the rearrangement of atoms. While a physical change can often be reversed, a chemically change typically cannot be, except through more chemical reactions. When a chemical change occurs, there is also a change in the energy of the system.</em>

So, in this case, they are not being rearranged, just combined to form one big fruit salad.

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A rock is material made up of one or more.....
Tanzania [10]
.......made up of one or more minerals
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3 years ago
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Railroad tracks appear to converge in the distance. This provides a cue for depth perception known as _____. Please type the cor
evablogger [386]

Answer:

linear perspective

Explanation:

Railroad tracks appear to converge due to our field of view. When an object is far away it seems smaller that means there is angle that subtends from our line of sight this results in the illusion of railroad tracks converging.

Railroad tracks converging activates the linear perspective of our vision. Linear perspective is a technique used to convey a sense of depth in two dimensional representation of an object. The lines at an angle give us a sense of depth otherwise straight lines will not be able to convey depth.

6 0
3 years ago
A football is kicked off with an initial speed of 64 ft/s at a projection angle of 45o. A receiver on the goal line 60 yd away i
Brut [27]

The range (maximum horizontal distance) travelled by a projectile is given by the formula

R = V^2(sin 2A)/g

where

R = range

V = initial velocity of ball = 64 ft/sec. (given)

A = angle of launch = 45 degrees (given)

g = acceleration due to gravity = 32.2 ft/sec^2 (constant)

Substituting values,

R = 64^2(sin 2*45)/9.8

R = 127.20 feet

Since the receiver is 60 yards away (180 feet), he will have to travel a distance of 180 - 127.20 = 52.80 feet to catch the ball.

The ball's total travel time is given by the formula

T = 2V(sin A)/g

where all the terms have been previously defined.

Substituting values,

T = 2(64)(sin 45)/32.2

T = 2.82 sec.

Therefore, in order for the receiver to catch the ball, his speed must be equal to

52.80/2.82 = 18.72 ft/sec.

Hope this helps ya

4 0
4 years ago
In Millikan's oil drop experiment an oil drop is at rest between two large plates separated by 1.3 cm when the potential differe
sweet-ann [11.9K]

Answer:

Mass of the oil drop, m=3.01\times 10^{-15}\ kg

Explanation:

Potential difference between the plates, V = 400 V

Separation between plates, d = 1.3 cm = 0.013 m

If the charge carried by the oil drop is that of six electrons, we need to find the mass of the oil drop. It can be calculated by equation electric force and the gravitational force as :

qE=mg

m=\dfrac{qE}{g}

q=6e, e is the charge on electron

E is the electric field, E=\dfrac{V}{d}=\dfrac{400}{0.013}=30769.23\ V/m

m=\dfrac{6\times 1.6\times 10^{-19}\times 30769.23}{9.8}

m=3.01\times 10^{-15}\ kg

So, the mass of the oil drop is 3.01\times 10^{-15}\ kg. Hence, this is the required solution.

5 0
3 years ago
Answer please 98 points also brainliest
Yuri [45]

the answer is D) The air in the aquarium is saturated

none of the other answers were realistic AND I took this before so I know the right answer.

5 0
4 years ago
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