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harkovskaia [24]
3 years ago
11

April moves from a position that is 5 m north of her front door to a new position that is 3 m south of her front door. If this m

ovement takes her 4 seconds what is her velocity?
Physics
1 answer:
DanielleElmas [232]3 years ago
5 0

Velocity =

(displacement)/(time for the displacement), in the direction of the displacement.

Displacement = 8 m south
Time for the displacement = 4 seconds
Direction of the displacement = south

Velocity (8 m south) / (4 seconds), to the south

Velocity = 2 m/s, toward the south

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Why do atoms form bonds by donating, accepting or sharing electrons with other atoms?
sineoko [7]

Answer:

atoms form bonds by donating, accepting or sharing electrons with other atoms in order to complete their valence shell electrons

hence , C. Bonding gives an atom the same number of protons as a noble gas.

Explanation:

i hope it helped

7 0
3 years ago
Compare the gravity between these pairs, each consisting of an Earth-like planet and its star. You are given the mass of the pla
Maru [420]

Answer:

The answer is below

Explanation:

Newton's law of gravity states that the force between two bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. The law is expressed by the formula:

F=G\frac{m_1m_2}{r^2} \\\\Where\ F=force,G=gravitational\ constant, m_1\ and\ m_1=mass\ of\ objects,r\ =distance\ between \ the\ two\ objects.

The masses and distances for this question is in common units, Therefore the result would be in ratios

a) 4 MEarth / 2 MSolar / 3 AU

The force (F) = (4 * 3) / 3² = 4/3

b) 1 MEarth / 1 MSolar / 1 AU

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c) 1 MEarth / 2 MSolar / 2 AU

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6 0
2 years ago
Just about everyone at one time or another has been burned by hot water or steam. This problem compares the heat input to your s
kkurt [141]

Answer:

B. Steam burns the skin worse than hot water because the latent heat of vaporization is released as well.

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For any substance of mass m, the heat required to change the temperature by \Delta T is mC\Delta T (S.I. unit = Joules).

where C, the specific heat capacity is the same and a constant for both the condensed steam and the boiling water.  

But, there is a "hidden" energy (heat) released by the steam called latent heat

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3 0
3 years ago
If the force acting on a body of mass 40 k.g is doubled by how much will the acceleration change​
disa [49]

Answer:

Explanation:

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7 0
2 years ago
What is the bouncing of light when it changes media
matrenka [14]

When light passes from one medium to another, part of it continues on
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back into the first medium.

The part of the light that continues on into the new medium is <em>transmitted</em>
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Its direction usually changes as it crosses the boundary.  The bending is <em>
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5 0
3 years ago
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