PHYSICS MIDDLE SCHOOL

If the length of the ramp is 2m and the height of the ramp is 1m , what is the mechanical advantage?

Answers

Answer 1
Answer:

Answer:

Mechanical Advantage is 2

Explanation:

M.A = length of ramp / height of ramp

= 2/1

=2

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How do whales bats and dolphins use echolocation?A To scare away predators
B To attract mates
C To orient them selves and find food
D To tell animals of there species where they are

Answers

C is your answer ithink
I think ur answer is c

Waves sometimes travel by squeezing together and then do what

Answers

Splash back into the ocean or river

A car traveling with constant speed travels 150 km in 7200 s. What is the speed of the car?Express the speed to two significant figures and include the appropriate units.

Answers

The speed of the car is 75 km/h

Further explanation

These are the formulas that we have to remember before solving the problem.

Speed is the rate of change of distance.

\large { \boxed {v = (d)/(t)}}

v = speed ( m/s )

d = distance ( m )

t = time ( s )

Acceleration is the rate of change of velocity.

\large { \boxed {a = (\Delta v)/(t)}}

a = acceleration ( m/s² )

Δv = change in speed ( m/s )

t = time ( s )

Let us now tackle the problem!

Given:

distance = d = 150 km

time taken = t = 7200 s = 2 hours

Unknown:

velocity = v = ?

Solution:

v = (d)/(t)

v = (150)/(2)

\large {\boxed {v = 75~km/h} }

The acceleration of the car is 0 m/s² because it travels with constant speed.

We could also plot the distance vs time graph as shown in the attachment.

Learn more

Answer details

Grade: Middle School

Subject: Physics

Chapter: Kinematics

Keywords: indycar top speed of a fastest police car has ever gone

Final answer:

The car's speed is 75 km/hour, as determined by dividing the total distance travelled (150 km) by the total time taken (2 hours).

Explanation:

To answer this question, we use the

formula for speed

, which is distance traveled divided by the time taken. Here, the distance travelled by the car is 150 km and the time taken is 7200 s (which is equal to 2 hours). Therefore, the speed will be 150 km divided by 2 hours, resulting in a speed of

75 km/hour

, stated to the correct number of significant figures.

Learn more about Speed Calculation here:

brainly.com/question/35969362

#SPJ6

Please! Explain a connection with a molecule and matter.

Answers

An atom is the basic unit of a chemical element while a molecule is an electrically neutral group of two or more atoms held together by chemical bonds. I guess its connected because in a molecule, its two or more atoms because of the bond.

PLEAAAASSEEEEE HELPP! A volcano forms near a tectonic plate boundary. What can you infer about the formation of this volcano?

Answers

Answer:

The volcanoes are directly associated with the convergent type of plate boundary.

In a convergent boundary, two plates move towards each other. Due to their collision, a subduction zone is formed where the denser plate goes down below the other less dense plate, and the trench lies above this zone, which is a long, narrow depression and marks the boundary between the two distinct plates.

As the denser plate subducts, it melts and mixes up with the magma. This magma then rises upward due to the force exerted by the convection current. This magma then reaches the surface towards the over-riding plate, resulting in the formation of volcanoes, or volcanic or island arcs.

Thus, the convergence of two plates leads to the formation of a volcano.
You can infer that the volcano was formed from a convergent boundary (two tectonic plates that collide, and for a volcano specifically one plate probably went under the other pushing up magma underground).

The net force acting on a 50 kg crate is 0 N. What is the crate's acceleration

Answers

Force = mass * acceleration

So, 0 = 50 * a

a = 0
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