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pogonyaev
4 years ago
9

True or false? Three common voltage sources are batteries, solar cells, and generators.

Physics
2 answers:
Len [333]4 years ago
8 0
The answer to this question would be true
marysya [2.9K]4 years ago
3 0
True .
Hope this helped!!
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The intensity of electromagnetic waves from the sun is 1.4 kW/m2 just above the earth's atmosphere. Eighty percent of this reach
Lina20 [59]

Answer:

4.7 × 10⁵J

Explanation:

E = I * a * t

80% = 0.80

25cm = 0.25m

52cm = 0.52m

0.90h = 3240s

E = (0.80)(1400)(0.25 * 0.52)(3240)

= 4.7 * 10⁵J

3 0
4 years ago
ASK YOUR TEACHER A meter stick is found to balance at the 49.7-cm mark when placed on a fulcrum. When a 51.5-gram mass is attach
Simora [160]

Answer:

0.114 kg or 114 g

Explanation:

From the diagram attaches,

Taking the moment about the fulcrum,

sum of clockwise moment = sum of anticlockwise moment.

Wd = W'd'

Where W = weight of the mass, W' = weight of the meter rule, d = distance of the mass from the fulcrum, d' = distance of the meter rule.

make W'  the subject of the equation

W' = Wd/d'................ Equation 1

Given: W = mg = 0.0515(9.8) = 0.5047 N, d = (39.2-16) = 23.2 cm, d' = (49.7-39.2) = 10.5 cm

Substitute these values into equation 1

W' = 0.5047(23.2)/10.5

W' = 1.115 N.

But,

m' = W'/g

m' = 1.115/9.8

m' = 0.114 kg

m' = 114 g

6 0
3 years ago
If the mass of the body is tripled and its velocity becomes doubled, then the linear momentum of the body will​
Klio2033 [76]

Answer:

don't know I is not am studnt

5 0
3 years ago
A conductor is a material in which what can move through easily? Electrons Water Condensation Oil
kondaur [170]

Answer:

Electrons

Explanation:

:) hope this helps. Have a great day!

4 0
3 years ago
In an experiment, the explanation of the expected outcome, based on research, is the _______________.
vladimir1956 [14]
C. Hypothesis
The hypothesis is presented as an explanation of the observed results.
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