PHYSICS HIGH SCHOOL

A stone falls from a ledge and takes 8 seconds to hit the ground. The stone has an original velocity of 0 m/s. How tall is the ledge? A. 313.6 meters B. 78.4 meters C. 39.2 meters D. 1,254.4 meters

Answers

Answer 1
Answer: The right answer for the question that is being asked and shown above is that: "D. 1,254.4 meters." A stone falls from a ledge and takes 8 seconds to hit the ground. The stone has an original velocity of 0 m/s. The ledge has the height of D. 1,254.4 meters
Answer 2
Answer:

By the way, on the Penn Foster test, C. 1,254.4 meters is incorrect.

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Question number 6 : Is my answer right?? Plzz help
The density of ice is 0.92 g/cm3. An ice sculptor orders a one cubic meter block of ice. What is the mass ofthe block? Hint: 1 m3 = 1,000,000 cm3. Give your answer in grams and kilograms.
A precipitation reaction is a reaction between two aqueous __________ that results in the formation of a solid compound.
If a bar magnet is cut 3 times resulting in 4 smaller magnet pieces, then each new magnet will have *A.only a N poleB. only a S poleC. both a N and S poleD.neither a N nor a S pole
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Images produced by a cathode ray tube result from induced emf True or false

Answers

i'm not completely sure but i think it's false 

What is the difference in electrical potential energy between two places in an electric field?a. current
b. resistance
c. potential difference
d. induction

Answers

The question is poorly worded, and makes it harder for the student to learn the basics of the subject. "Potential Difference" is the difference in electrical potential between two places in an electric field ... not in electrical potential energy.

NEED ASAP PLEASE !!! Suppose that a block is pulled 16 meters across a floor. What amount of work is done if the force used to drag the block is 22 N?

A. 200 J
B. 330 J
C. 352 J
D. 220 J

Answers

Answer: Option (C) is the correct answer.

Explanation:

Work is defined as the energy required when force is applied in a certain direction.

The expression for work, force and distance is as follows.

                        W = F × d

where,      W = work

                 F = force

                 d = distance

It is given that force applied to drag the box is 22 N and distance is 16 meters. Therefore, calculate work done as follows.

                        W = F × d

                            = 22 N × 16 meters

                            = 352 Nm               (1 Newton meter = 1 joule)

or,                   W = 352 J

Thus, we can conclude that amount of work done is 352 J.
work = force x distance
22N x 16m = 352 J

In the equation for Ohm’s law what does I stand for?A. current

B. resistance

C. kilowatts

D. voltage

Answers

A) current 

(I is always current in electricity)

A scientific model can be used to _______.a. replace study of the actual system
b. better understand systems and processes
c. complicate ideas
d. all of the above

Answers

The idea to have scientific models it is to be used in order to better understand systems and procesess. So the answer you are looking for is option B. Hope this is useful

You're caring for three children in your home: a three-year-old, a four-year-old, and a two-month-old infant. The infant often becomes hungry and wants to be fed just when you're involved in something with the two older children. What should you do with the infant? A. Put the infant in a location so he or she can watch you and the other two children; then feed the infant when you're through.
B. Hold and feed the infant while you supervise the activity of the older children.
C. Have the older two children continue the project on their own while you feed the infant in a separate room.
D. Prop the infant's bottle in the crib so he or she can eat while you continue to help the older children

Answers

Answer: B. Hold and feed the infant while you supervise the activity of the older children.

Explanation: On one side, a two-month-old is too young to understand that he has to wait until you finish with your other activities so you are free to feed him. His needs are urgent. Of course he is also too young to take the bottle on his own. These are the reason why options A and D are incorrect. On the other side, the other two children also need your supervision. You have to take care of them and leave them alone is not a good option. This is why option C is incorrect. Taking all these things into account I find option B as the best answer.

B i belive, :) :) :) ..
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