PHYSICS HIGH SCHOOL

Is Alfred Nobel the inventor of the Atomic Bomb? A)true B)false

Answers

Answer 1
Answer:

Answer:

he is the best known for invention of dynamites and explosive device

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If you are going 30 miles an hour in good condition, it will take how many feet to stop .
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a moving company is called into a building and asked to relocate 520 bricks to a location 15 meters above the ground if each brick is 4 kilograms what amount of work will be needed to accomplish the task

Answers

Wow ! I'm sweating just thinking about it.


The amount of work required is the additional potential energy

that the bricks will have when they're all up at the higher location.


Increase of potential energy = (mass) x (gravity) x (increase in height)


The total mass is (520 bricks) x (4 kg/brick) = 2,080 kilograms


Potential energy = (2,080 kg) x (9.8 m/s²) x (15 m)


Potential energy = 305,760 Joules.


Grab your hat, put on your sunscreen, and get busy.

Answer:

Work done to lift one brick = 4 Kg x 9.8 m/sec 2 x 15 m = 588 Joules. Then work done to lift 520 bricks = 520 x 588 = 305.760 j

Which of the following accurately describes the differences between the SI and English systems of measurement? A. The two systems are used interchangeably in the scientific and technical communities.

B. The English system is more commonly used in Europe than in the United States.

C. The English system is preferred for use in the scientific and technical communities due to its ease of use over the SI system.

D. The SI system, which is based on the metric system, has been more widely adopted than the English system, which is harder to use.

Answers

The best answer is D. The SI system, which is based on the metric system, has been more widely adopted than the English system, which is harder to use. In order to standardize measurements, the International System of Units or the SI units are commonly used around the world since they are more easy to understand and compare than the English unit.

As an object increases in altitude, its mass: Decreases
OR remains the same

Answers

Answer:

Remains same

Explanation:

Mass of an object is measure of the matter it contains. It is independent of height. Commonly when we weigh something we measure its weight and not mass. Weight is a product of mass (m) and acceleration due to gravity (g).

As altitude changes, the amount of matter doesn't change thus the mass will remain constant. But due to the change in height the gravitational force will change and thus weight will vary.
No matter where you are, your mass stays the same. It's weight that changes. Also applies to any object.

Which of the following is a possible use for nuclear energy?a. power plants
b. weapons
c. powering submarines
d. all of the above

Answers

Nuclear energy can be used to power all ofthe above choices. Nuclear power plants produce radioactive waste that must bestored properly. It is very impossible for a nuclear power plant to have nowaste at all since lots of chemicals are used to create the process as it givesenergy to other machines, weapons such as bombs and  powering submarines.  Radioactive waste can not be released intolocal water supplies since the wastes are very radioactive and may causemutation to the fishes and bioaccumulation which will affect humans as well. Itwill also cause air pollution if the chemicals are not stored properly.

Answer:

D. All of the above. you're welcome

Which of these is the most likely impact of solar prominence on Earth? A) rerouting of aircraft
B) increase in severity of hurricanes
C) long-term electrical power generation
D) improvement in satellite communication

Answers

Solar prominences themselves are of no concern because they are visible in the Hydrogen Alpha wavelength. They are anchored in place by magnetic fields. When these fields break or reconnect, it can send the plasma that makes up the prominence away from the sun. If one of these clouds impacts Earth, they are called CMEs or coronal mass ejections. Depending on the magnetic orientation of the cloud with respect to Earth's the CME can break down our magnetic field resulting in geomagnetic storms, aurorae, power grid fluctuations, and particle radiation near the poles, satellite single upset events, and radio blackouts. 


Thus, letter a is the answer. 

Answer:

A) rerouting of aircraft

Explanation:

Heat transfer occurs

Answers

It depends on the tempature of something or an object,
 The Object has to go from hot to cold, that is a primary example of how heat transfer occurs
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