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Paraphin [41]
3 years ago
5

EXPERTS/ACE and people that wanna help 4 sure only!

Physics
1 answer:
mario62 [17]3 years ago
3 0
That first one you have selected (3,-3) works in both equations so it's correct.
good job.

you can do this guess and test method with multiple choice answers. If it works in both equations it is the solution. Otherwise use substitution or elimination to combine the two into one equation in only one variable. Then you can solve for the one variable first and use it to solve for the other.

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Need help with science questions!
natta225 [31]

Answer:

A.  Moving the mass from Point C to B, although it involves a greater distance, requires less force to do the same amount of work.

Explanation:

The amount of work will be the same either way.  By going from C to B, the mover will exert less force over a greater distance, which is easier than exerting a greater force over a shorter distance.

3 0
3 years ago
The bass tones rattling the windows of the car next to you at a red light are at a __________.
Andrew [12]
... low frequency and high amplitude.
4 0
3 years ago
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rodikova [14]

a is the answer hope this helps

8 0
4 years ago
One end of a metal rod is in contact with a thermal reservoir at 745. K, and the other end is in contact with a thermal reservoi
Masteriza [31]

Answer:

a)S_1=-9.65}\ J/K

b)S_2=71.18\ J/K

c) 0 J/K

d)S= 61.53 J/K

Explanation:

Given that

T₁ = 745 K

T₂ = 101 K

Q= 7190 J

a)

The entropy change of reservoir 745 K

S_1=-\dfrac{7190}{745}\ J/K

Negative sign because heat is leaving.

S_1=-9.65}\ J/K

b)

The entropy change of reservoir 101 K

S_2=\dfrac{7190}{101}\ J/K

S_2=71.18\ J/K

c)

The entropy change of the rod will be zero.

d)

The entropy change of the system

S= S₁ + S₂

S = 71.18 - 9.65 J/K

S= 61.53 J/K

3 0
4 years ago
Which of these describes the heat element of a toaster oven?
Misha Larkins [42]
A is the answer: A resistor, which converts some electrical energy to thermal.
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8 0
4 years ago
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