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Vesna [10]
3 years ago
10

PLS ANSWER What is the difference between direct and alternating current? (Be sure to write in complete sentences starting with

a capital and ending with a period.)
Physics
1 answer:
IgorC [24]3 years ago
7 0

Direct current (DC) is the flow of electric charge in only one direction. ... Alternating current (AC) is the flow of electric charge that periodically reverses direction. If the source varies periodically, particularly sinusoidally, the circuit is known as an alternating current circuit.

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How do we use pulleys in real life?
Sholpan [36]

Answer:

Construction pulleys are used in order to lift and place heavy materials. Curtains at a theatre are moved using pulley systems that pull the curtains apart. Blinds on windows operate using a pulley system to move the blinds up and down.

6 0
3 years ago
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An object moves with constant acceleration 4.00 m/s^2 and over a time interval reaches a final velocity of 12.0 m/s.
Bas_tet [7]
A) We can use the equation of motion:
2as = v² - u²
s = (12² - (-6)²) / 2 x 4
s = 13.5 m

b) We calculate the time over which this displacement occurred using:
v = u + at
t = (12 - -6)/4
t = 4.5 seconds
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7 0
3 years ago
Which is a characteristic of the image formed by an
Sloan [31]

Answer:

The image is virtual.

Explanation:

answered on Edg.

4 0
3 years ago
Need help anybody thanks
mars1129 [50]
If there are no windows, then the illumination in the room depends
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4 0
3 years ago
A 70 kg student now sits in the chair and the same 35 N force is applied to the chair. What is the chair's new acceleration?
amid [387]

Answer:

0.5 m/s²

Explanation:

Applying,

F = ma............... Equation 1

Where F = Force applied to the chair, m = mass of the student, a = acceleration of the chair

make a the subject of the equation

a = F/m............ Equation 2

From the question,

Given: F = 35 N, m = 70 kg

Substitute these values into equation 2

a = 35/70

a = 0.5 m/s²

Hence the new acceleration of the chair is 0.5 m/s²

5 0
3 years ago
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