PHYSICS HIGH SCHOOL

Critical thinking!!Comparing and Contrasting You carry
two heavy bags of groceries upstairs to your
kitchen. Will you do more work on the bags if
you carry them up one at a time? Explain.

Answers

Answer 1
Answer:

Answer:

no both remains same...

Explanation:

because the work done is given by the product of the both the masses added (m+m) Displacement

and second time when you carry the bags individually it comes out to be the same m×displacement + m×displacement

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If one body is positively charged and another body is negatively charged, free electrons tend toA. remain in the positively charged body. B. move from the negatively charged body to the positively charged body. C. remain in the negatively charged body. D. move from the positively charged body to the negatively charged body.
show how you would connect three resistors each of resistance 6 ohm so that the combination has a resistance of first 9 ohm second 4 ohm​

Make the following conversion.
24.7 mL = _____ cm3
247
2470
2.47
24.7

Answers

since 1ml = 1 cm cubed its gonna be 24.7

24.7.....................................

Which statements explain current theories about dark energy and dark matter? Check all that apply.(correct) Space that appears empty actually contains dark energy and dark matter.
(correct) Dark matter does not emit electromagnetic radiation.
Scientists believe dark energy will cause the universe to collapse inward to a single point.
(correct) Scientists theorize that dark energy is causing the expansion of the universe to accelerate.
Dark matter includes all of the dust, ice, and debris that scientists observe in black holes.

just trynna help out future students

Answers

Answer:

Space that appears empty actually contains dark energy and dark matter

Dark matter does not emit electromagnetic radiation

Scientists theorize that dark energy is causing the expansion of the universe to accelerate

Explanation:

According to the current theories about dark energy and dark matter, scientists theorize that dark energy is causing the expansion of the universe to accelerate as dark matter does not emit electromagnetic radiation. Moreover, the space that appears empty actually contains dark energy and dark matter.

Answer:

A, B, D or 1, 2, 4

Explanation:

i did it on edge hope it helps

Please help! This is due in 10 minutes!! I will mark brainliest asap

Answers

The object is at rest. This is because time is going by and there’s no distance being added
Third option is the answer aka the object is resting hope this helps you

1. An isotope has the same ________, but a different ________ .Question 1 options:

number of protons, number of electrons


number of neutrons, number of protons


Mass number, number of protons.


Atomic number and Mass number

2.U-232
U-235
U-236
U-238


These nuclei all have a different number of

Question 2 options:

Electrons


Neutrons


Protons


Nucli
Identify the number of neutrons in one atom of sulfur with an isotopic mass number of 34 amu.

Question 3 options:

16


18


32


34

3.Identify the number of neutrons in one atom of sulfur with an isotopic mass number of 34 amu.

Question 3 options:

16


18


32


34

Answers

1:D(Atomic number, Mass number)  2:B(Neutrons)  3:b(18) hope it helps

A meterstick moves toward you at speed 0.60c. What length do you measure for the meterstick?

Answers


-- IF the meter stick is oriented perpendicular to the direction from
it to you, then it appears 1 meter long to you, but very very skinny. 
The Lorentz contraction only applies in the direction of motion.

-- If the length of the meter stick is pointing toward you, then . . . 

L = L₀ √ (1 - v²/c²)

   =      √ (1 - 0.36)

   =      √ (0.64)  =  0.8 meter .

How much energy, in joules, is released when 17 kilograms of granite is cooled from 45°C to 21°C?

Answers

Energy or heat can be calculated in terms of the mass, temperature, and specific heat of a substance. This is given by the equation:

U = mCpΔT = mCp(Tf-Ti)

where:
m = mass
Cp = specific heat
ΔT = temperature difference

For this problem, you need to get the specific heat of granite which can be found in reliable chemistry/engineering books or websites. According to Engineering Toolbox website, the Cp of granite is 790 J/(kg-°C).

U = 17 kg (790 J/(kg-°C)) (21-45) = - 322,320 Joules

*Note: the sign is negative because energy was released
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