PHYSICS HIGH SCHOOL

Energy is produced in the Sun through a _____ process. nuclear chemical mechanical frictional

Answers

Answer 1
Answer: nuclear, normally nuclear fission
Answer 2
Answer: Yes, it is nuclear, but not fission. The sun produce energy through nuclear fusion.

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A 10-kilogram bicycle is traveling at a speed of 2 m/s. what is the bikes kinetic energy?
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Which describes the characteristics of a liquid?a. It has no fixed volume or shape.
b. It has a fixed volume and shape.
c. It has high energy and expands to fill the container.
d. It has a fixed volume and varied shape.

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What happens when you pour water in a glass? It takes the shape of the glass. This means that water can't have a fixed shape or volume

Solid substances can exist in more than one form. A.True B.False

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A. True

Solid substances can indeed exist in more than one form, a phenomenon known as "allotropy" or "polymorphism." In allotropy, the same element or compound can have different crystal structures or arrangements of atoms in the solid state, resulting in distinct physical properties.

Common examples include carbon, which can exist as both diamond and graphite, and sulfur, which has multiple crystalline forms. These different forms of solids can have different properties, such as hardness, density, and electrical conductivity, even though they are made up of the same chemical elements.

I need help I can't solve it and I'm struggling badly. Justin weighs 185 lb. and decides to climb a staircase that has a vertical distance of 12 m. He climbs the stairs in 12.7 seconds. Calculate his work:

Answers

Answer:

Power is work/time - not needed here

W(work) = F * D      force * distance

Here W = M g h

Since 2.20 lb is equivalent to 1 kilogram mass

W = 185 lb / 2.20 lb/kg * 9.80 m/s^2 * 12 m = 824 Joules

note that a pound is a unit of force and a kilogram is a unit of mass

A radio station transmits waves at a frequency of 120MHz an a speed of 300 million m/s. Calculate the wavelength.

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wavelength = (speed)/(frequency) = 300,000,000/120,000,000 = 2.5 meters

How does a scrap heap magnet work? (In detail)

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is nothing but a heavy electromagnet. On a soft iron core (because, there should not be any retentivity) thick insulated copper wire is wound. As the magnetic power of an electromagnet is depending upon the current, number of turns in the coil, the copper wire should be able to withstand heavy current and more number of turns will create very strong magnetic field. When the current passes it will become a very strong magnet and will attract all the magnetic materials in the scrap. When there is no current the core gets dememagnetised and all the magnetic materials will be falling down from it . This arrangement is fitted at the tip of the cable of a crane and the operating switch will be near the operators cabin. The crane will be brought near the scrap, and the operator switch the magnet on and all the scrap will be attracted by the magnet. Then the crane will be turned to another place the operator switches the magnet off. All the scraps will be falling down. 
Instead of a soft iron core ( less retentivity) anyother material with high retentivity is used even after switching it off the scrap will not bec falling down.

Firearms are typically found in which way

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Gunshots Are Found By Fingerprints Or Gunshot Residue Hope It Helps☺️
Other Questions
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A new object has been discovered in the solar system. In your own words, justify how the object can be proved to be a comet.