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Lady bird [3.3K]
2 years ago
12

URGENT PLEASE ANSWER THIS ASAP I WILL MARK YOU THE BRAINLIEST !!!

Physics
2 answers:
Salsk061 [2.6K]2 years ago
8 0
Sound waves because sound requires a medium such as air or water
user100 [1]2 years ago
6 0

Answer:

sound waves

Explanation:

have good day

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A stone is thrown vertically upward with an initial velocity of 40m/s. Taking g = 10 m/s^2 find the maximum height reach by the
Kitty [74]

Explanation:

u=40

v=?

h=?

v²-u²=2gs

0²-40²=2×10×s

160=20s

s=160/20

=80m/s

total distance= upward distance ×downward distance

=80+80

=160m

total displacement=0 because u and v is the same.

3 0
3 years ago
Read 2 more answers
2. Ms. Evelyn lined up her students at recess on the soccer field. She told each student to kick a soccer ball as hard as they c
mash [69]

Answer

A. Yes, because they did several tests with the soccer balls and recorded their observations. B. Yes, because every student kicked

Explanation:

5 0
2 years ago
What parts of an atom can change during a nuclear reaction that cannot change during a chemical reaction? Question 15 options: A
viva [34]
Neutrons and protons cannot be removed from nucleus from chemical reactions because they are strongly held together but nuclear reactions are strong enough to separate them. Hence option A is correct.
6 0
2 years ago
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Which term describes the forces acting on the car? A. inertial B. buoyant C. balanced D. unbalanced
Anna35 [415]
The answer is unbalanced because the forces actually act on each other.
3 0
3 years ago
Calculate the change in length of concrete sidewalk (coefficient of linear expansion for concrete is 12*10^-6/celcius) that is 1
anyanavicka [17]

Answer:

The answer to your question is 5.4 cm

Explanation:

This problem refers to calculate the change in length in one dimension due to a change in temperature.

Data

α = 12 x 10⁻⁶

Lo = 150 meters

ΔT = 30 °C

Formula

                    ΔL/Lo = αΔT

solve for ΔL

                    ΔL = αLoΔT

Substitution

                    ΔL = (12 x 10⁻⁶)(150)(30)

Simplification

                    ΔL = 0054 m = 5.4 cm

7 0
3 years ago
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