PHYSICS HIGH SCHOOL

Energy is measured in units calleda. joules.
b. pounds.
c. meters.
d. horsepower.

Answers

Answer 1
Answer: Energy is measured in units called joules.

answer: a. joules.

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The four terrestrial planets that have solid, rocky surfaces are A. Mars, Venus, Earth, and Jupiter.
B. Mercury, Jupiter, Saturn, and Mars.
C. Mercury, Venus, Jupiter, and Mars.
D. Mercury, Venus, Earth, and Mars

Answers

The four terrestrial planets that hace solid, rocky surfaces are (D.) Mercury, Venus, Earth, and Mars. 

Check out pages 804-808 in the Glencoe Earth Science textbook provided by PennFoster. That way you can learn about the answer. :) 

a 1.0-kg ball is thrown into the air with an initial velocity of 30. m/s. a. how much kinetic energy does the ball have? b. how much potential energy does the ball have when it reaches the top of its ascent? c. how high into the air did the ball travel?

Answers

a) Kinetic energy of ball is 450J.

A 1kg ball is thrown into the air with an initial velocity of 30m/s. Newtonian physics says thekinetic energy that the ball have is:

( (1)/(2) ) ×1 kg×(30 (m)/(s)) ^(2)= 450 J.

In physics, what is kinetic energy?

The energy a thing has as a result of motion is known as kinetic energy. A force must be applied to a thing in order to accelerate it. We must put forth effort in order to apply a force. After the job is finished, energy is transferred to the thing, which then moves at a new, constant speed.

b) Potential energy of ball is 450J

The whole amount of energy will be in the form of potential energy since the ball's kinetic energy will be equal to zero. As a result, when the ball reaches the peak of its climb, its potential energy will be 450 J.

c) 45m high into the air ball travel.

KE at start = GPE at the peak

450 = mgh

450 = (1)(g)(h)

450= (1)(10)(h)

45=h

Therefore, the ball will reach up to a height of 45m.

To know more about kinetic energy and potential energy visit:

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There are 10 apples in a one-kilogram bag of apples. What is the average mass of each apple in the bag?Give your answer in units of kilograms and grams.

Answers

wouldn't it be .1 kilograms?.
1 apple=.1
2 apples=.2
3 apples=.3
4 apples=.4
5 apples=.5
6 apples=.6
7 apples=.7
8 apples=.8
9 apples=.9
10 apples= 1.0 kilogram

Density is found by dividing ____.a. mass by volume
c. mass by area
b. volume by mass
d. area by mass

Answers

Mass represents the density of an object multiplied with the volume it occupies. As a result, an object's density is found by dividing its mass by its volume. So the answer is a.

Answer: is

mass by volume

Explanation:

same quiz

A student measured the specific heat of water to be 4.29 J/g.Co. Theliterature value of the specific heat of water is 4.18 J/g.Co. What was the
student's percent error? *
A) .0256%
B) 2.56%
C) 2.63%
D) .0263%

Answers

Answer:

2.63 %.

Explanation:

Given that,

The calculated value of the specific heat of water is 4.29 J/g.C

Original value of  specific heat of water is 4.18 J/g.C.

We need to find the student's percent error. The percentage error in any quantity is given by :

P=\frac{|\text{original value-calculated value}|}{\text{original value}}* 100\n\nP=(4.29-4.18)/(4.18)* 100\n\nP=2.63\%

So, the student's percent error is 2.63 %.

The student's percent error in measuring the specificheat of water is 2.63%.

The specificheat is the amount of heat required to increase the temperature of 1 kg of mass by 1 degree Celsius.

Given:

Experimental Value = 4.29 J/g°C (student's measured value)

Accepted Value = 4.18 J/g°C (literature value)

The percent error can be calculated using the formula:

Percent Error = ((Experimental Value - Accepted Value) / Accepted Value)×100

Substitute the given values in the above formula and calculate the percenterror:

Percent Error = [(4.29 - 4.18) / 4.18] × 100

Percent Error = (0.11 / 4.18) × 100

Percent Error = 2.63%

The student's percent error in measuring the specificheat of water is approximately 2.63%.

Therefore, the student's percent error in measuring the specific heat of water is 2.63%.

To know more about the specificheat, click here:

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Nêu 2 ví dụ cho mỗi trường hợp sau: vật chuyển động,đứng yên,chuyển động do với vật này đứng yên so với vật khác,chuyển động thẳng,chuyển động cong,chuyển động tròn.

Answers

Answer:

Hai ví dụ như sau:

a) Vật thể chuyển động - Phương tiện di chuyển, Người đàn ông đi bộ

b) ở trạng thái nghỉ - Xe đứng, người ngồi

c) Chuyển động vì một vật đứng yên so với một vật khác - Một người đàn ông ngồi trên sân ga đứng yên so với đoàn tàu đang chuyển động, Một ô tô chuyển động ngang qua những ngôi nhà đang đứng yên

d) chuyển động thẳng - Đi bộ trên đường, chuyển động lên trên

e) chuyển động cong - Chạy trên đường tròn, đạn bắn ra từ súng

f) chuyển động tròn đều - Xe chuyển động trên đường cong, êlectron chuyển động vuông góc với từ trường đều

Explanation:

Hai ví dụ như sau:

a) Vật thể chuyển động - Phương tiện di chuyển, Người đàn ông đi bộ

b) ở trạng thái nghỉ - Xe đứng, người ngồi

c) Chuyển động vì một vật đứng yên so với một vật khác - Một người đàn ông ngồi trên sân ga đứng yên so với đoàn tàu đang chuyển động, Một ô tô chuyển động ngang qua những ngôi nhà đang đứng yên

d) chuyển động thẳng - Đi bộ trên đường, chuyển động lên trên

e) chuyển động cong - Chạy trên đường tròn, đạn bắn ra từ súng

f) chuyển động tròn đều - Xe chuyển động trên đường cong, êlectron chuyển động vuông góc với từ trường đều
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