An object of the same mass has three different weights at different times. Which statement is possible?

Answers

Answer 1

Answer: So we want to know how can an object have three different weights at different times. So weight is Fg=m*g, where m is the mass of the objecct and g is the gravitational acceleration. On Earth, g=9.81 m/s^2, in space g is much less and on the moon g=1.625 m/s^2 So we see that the object changes its weight by moving it to space and on the Moon.

Answer 2

Answer: The object started on earth, was transported to space,and was deposited on the moon

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An object is in (blank) when its distance from a(n) (blank) is changing
Gold at 100.0°C is placed in 2.00×10^2 g of water at 20.0°C. The mixture reaches equilibrium at 21.2°C. the specific heat of gold is 0.129 (J/g°C) What is the mass of the gold? Specific heat of water is 4.18 (J/g°C) .
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A bicyclist travels 60.0 in 3.5 hours. what is the cyclists average speed

A spring is stretched 0.75 m by using a force of 30 N. What is the spring constant

Answers

Hi there!

40 N/m

We can use Hooke's Law:

F = kx or F = -kx

F = force (N)

k = Spring constant (N/m)

x = displacement (m)

We are given the force and displacement, so:

F/x = k

30/0.75 = 40 N/m

The method of heat transfer by which the sun warms the earth isA) conduction
B) convection
C) radiation
D) solaration

Answers

the heat transfer by the sun that warms the earth is called radiation.

Only answer if you know all of themThe connections between neurons in the retina, specifically the connections referred to as “lateral inhibition,” help us see which of the following better?

AContrast
BFaces
CColors

Improving the contrast of an image (making the dark regions darker and the light regions lighter) helps us to identify:

AThe edges of objects
BThe center of objects
CThe color of an object

What assumption does our visual system make in order to see curved surfaces (domes, holes)?

ALight comes from above
BCurved surfaces are always evenly lit
CCurved surfaces are always easy to see, no assumptions are made

Which part of the face does our brain pay the most attention to?

AEyes and mouth
BEyes and ears
CEyes and chin

If all these assumptions sometimes lead to mistakes, for example in these optical illusions, why do we make them?

AIt helps us see things faster
BIt helps us see things correctly
CIt helps us pay attention to what's important
DAll of the above

Answers

1)
The connections between neurons in the retina, specifically the connections referred to as “lateral inhibition,” help us see which of the following better?

A) Contrast
B) Faces
C) Colors

2)
Improving the contrast of an image (making the dark regions darker and the light regions lighter) helps us to identify:

A) The edges of objects
B) The center of objects
C) The color of an object

3)
What assumption does our visual system make in order to see curved surfaces (domes, holes)?

A) Light comes from above
B) Curved surfaces are always evenly lit
C) Curved surfaces are always easy to see, no assumptions are made

4)
Which part of the face does our brain pay the most attention to?

A) Eyes and mouth
B) Eyes and ears
C) Eyes and chin

5)
If all these assumptions sometimes lead to mistakes, for example in these optical illusions, why do we make them?

A) It helps us see things faster
B) It helps us see things correctly
C) It helps us pay attention to what's important
D) All of the above

Hope that helps :)
*the correct answers are bolded, italicized, and underlined.*

Number 33 apparently the answer is 4 but I have no idea why

Answers

It would help if you managed to capture the whole question and all the answer choices
in the picture. Fortunately, you caught the whole question in the picture of #32.

Tools you need in order to answer this one:
-- When the frequency of a wave goes up, the wavelength gets shorter.
(That's why the high numbers on a radio receiver are called 'short-wave'.)
-- Photons with higher frequency carry more energy.
(That's why x-rays and gamma rays are dangerous to our delicate human tissues.)

Do you remember hearing these things in class ?

Anyway, as the frequency of the photons increases, their
energy increases, and their wavelengths get shorter.

I hope that's one of the choices that escaped getting caught in the photo.

The Earth's _____is what gives us day and night

1. Orbit
2. Rotation
3.Revolution

Answers

Answer: 2nd option, Rotation

I hope this helps, and Stay Safe! :)

Answer:

rotation

Explanation:

............................

Based on its type of chemical bond, which of the following has the highest boiling point? potassium chloride

ethyl alcohol

water

ammonia

Answers

Answer;

Potassium chloride

Explanation;

Potassium Chloride is an ionic compound and has ionic bond which is stronger than covalent bond in ethyl alcohol,water ,ammonia, and thus has the highest boiling point .
ionic bond is a type of bond that results from the transfer of electrons between metallic atoms and non-metallic atoms.

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Electromagnetic waves can transfer energy without which of the following?A. Medium. B. Electric field. C. Magnetic field. D. Change in either a magnetic or an electric field.