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3 years ago

Acceleration occurs when an object _____. Select all that apply.

Physics

2 answers:

fomenos3 years ago

3 0

Answer:

speeds up, turns a corner at constant speed, and slows down.

Explanation:

Acceleration occurs anytime an object's speed increases or decreases, or it changes direction.

Aleksandr-060686 [28]3 years ago

3 0

Answer: Goes in a straight line at a constant speed
Speeds up

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The objective lens of a certain refracting telescope has a diameter of 63.5 cm. The telescope is mounted in a satellite that orb

Ostrovityanka [42]

Answer:

0.255 m

Explanation:

We are given that

Diameter=d=63.5 cm= $63.5\times 10^{-2} m$

$1 cm=10^{-2} m$

L=265 km = $265\times 1000=265000 m$

Wavelength, $\lambda=500nm=500\times 10^{-9} m$

$1nm=10^{-9} m$

We have to find the minimum distance between two objects on the ground if their images are to be resolved by this lens.

$sin\theta=1.22\frac{\lambda}{d}$

$sin\theta=\frac{1.22\times 500\times 10^{-9}}{63.5\times 10^{-2}}$

$sin\theta=\approx \theta=9.606\times 10^{-7} rad$

$\frac{y}{L}=tan\theta\approx \theta$

$y=L\theta=265000\times 9.606\times 10^{-7}=0.255 m$

5 0

3 years ago

How are reflecting telescopes similar to devices that produce laser light?

Novosadov [1.4K]

Answer:a

Explanation:

Because its light

7 0

3 years ago

The water lost during transpiration is a side effect of the plant’s exchange of gases. However, the plant derives some benefit f

madam [21]

Answer:

The correct answer is

d. heating evaporative cooling and mineral transport

Explanation:

Plants transpire to expel excess heat energy by a process known as evaporative cooling. As the water involved in transpiration evaporates, heat energy is transferred from the plant system into the surrounding environment cooling down the plant.

During transpiration, the stomata of the plant are open allowing the outward flow of the evaporated water and also the open stomata enable the plant to absorb carbon dioxide (CO2) from the atmosphere. The carbon dioxide is required in photosynthesis for the formation glucose while producing oxygen as well.

The water also transports nutrients dissolved in it as it is being transported to the leafs for evaporation. These nutrients are thus delivered tm all parts of the plant.

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3 years ago

Matter is anything that has

Svetlanka [38]

Answer:

Space

Explanation:

Hope this helped

8 0

4 years ago

As a system increases in volume, it absorbs 59.0 J of energy in the form of heat from the surroundings. The piston is working ag

Zepler [3.9K]

Answer:

The initial volume of the system is 2.7 L

Explanation:

The change in internal energy is given by;

ΔU = Q - W

where;

Q is the heat absorb from the surrounding

W is the work done by the system

Given;

ΔU = -107.6 J

Q = 59 J

W = ?

W = Q- ΔU

W = 59J - (-107.6)

W = 166.6 J

Work done is given by;

W = PΔV

W = P(V₂ - V₁)

101.325 Joules = 1 L.atm

166.6 Joules = ?

= 1.644 L.atm

1.644 L.atm = 0.543 atm(57.7L - V₁)

57.7L - V₁ = (1.644 L.atm) / (0.543 atm)

57.7L - V₁ = 3.0 L

V₁ = 57.7L - 3.0 L

V₁ = 2.7 L

Therefore, the initial volume of the system is 2.7 L

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3 years ago