PHYSICS MIDDLE SCHOOL

What is the hardest rock to break with a hammer

Answers

Answer 1
Answer: Bedrock might be the answer

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Which waves are longitudinal waves? Check all that apply.sound waves
ocean waves
ultraviolet waves
earthquake P-waves
earthquake S-waves
radio waves

Answers

Answer:

Sound waves and earthquake P-waves are longitudinal waves.

Explanation:

Longitudinal waves are waves in which the displacement through the medium is in the same direction of movement of the wave, independent of the direction.

There are included in the concept of longitudinal wave: sound waves (vibrations in pressure, particle displacement and velocity of particles propagated in an elastic medium) and earthquake waves of type P (created by earthquakes and explosions).
Sound waves.
Eathquake P-Waves

Find the mechanical advantage of a ramp that is 6.0 m long and 1.5 m tall.

Answers

The mechanical advantage of a ramp that is 6.0 m long and 1.5 m tall. we can easily take any object to height of 6 m.

What is gravitational Potential Energy ?

Gravitational potential energy is an energy acquired by an object due to a change in its height when it is present in a gravitationalfield. It is denoted by P or U. and it its expressed in joule.  Gravitational potential energy is given by U = mgh where m is the mass of the object, g is acceleration due to gravity and h is the height.

when we take an object of mass m to a certain height in the field of gravitation, we can say that body has potential energy and we release that body from that height, it falls.

Ramp of 6.0 m long and 1.5 m tall is that there will be angle made by the inclination is 14.4°. Mechanical advantage of a ramp is, it is used for  transportation of heavy objects to a certain height at certain distance. It reduces physical efforts and make our task faster. when we have to transport lots of object to a certain height, when we put objects on the ramp which has motor and upper part of the belt rotates, it will easily get transported to that height without physical efforts. Escalator is also a type  ramp. Ramp which has no rotator, we have to push objects on the ramp to that height.

Hence these are advantages of a ramp.

To know more about Ramp, click :

brainly.com/question/13492520

#SPJ3.

Answer: 4.0

Explanation:

A white blood cell that destroys pathogens by engulfing them and breaking them down is called please helpA Antigen


B B-cell


C Antibody


D Phagocyte

Answers

Answer: D

Explanation: Its a type of white blood cell that moves by amoeboid
The answer is D. Phagocyte

What is the role of solid particles in the clouds?

Answers

Well,

The tiny, solid particles you find in the atmosphere serve as cloud condensation nuclei.

You see, in order for water to condense, the water must have a direct object, grammatically speaking.

Your answer: Tiny, solid particles in the atmosphere play a role in cloud formation by providing the object upon which water may condense to form clouds.

Hope this help!

What does the star release, and in what form do we see it ?

Answers

Stars are made of very hot gas. This gas is mostly hydrogen and helium, which are the two lightest elements. Stars shine by burning hydrogen into helium in their cores, and later in their lives create heavier elements.

A stuntman jumps from the roof of a building to the safety net below. How far has the stuntman fallen after 2.3 seconds? A. 25.9 m B. 21.2 m C. 9.8 m D. 11.3 m

Answers

Answer:

answer should be 25.9

Explanation:

Answer:

25.9 m

Explanation:
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