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gavmur [86]
3 years ago
15

Which single force acts on an object in freefall?

Physics
2 answers:
nirvana33 [79]3 years ago
8 0
Gravity i think but if uts not gravity then it will be air resistance
balandron [24]3 years ago
3 0

It's A. Gravity...I know cuz u took test

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A thin film of oil of thickness t is floating on water. The oil has index of refraction no = 1.4. There is air above the oil. Wh
vesna_86 [32]

Answer:t=0.1205

Explanation:

Given

Refractive index of oil\left ( \mu \right )=1.4

Wavelength of red light =675 mm

Condition for constructive interference is

2\mu _{oil}t=\frac{m\lambda }{2}

t=\frac{m\lambda }{4\mu _{oil}}

For m= 1 i.e. for minimum thickness

t=\frac{1\times 675\times 10^{-9}}{4\times 1.4}

t=0.1205 \mu m

5 0
3 years ago
A piece of solid copper, at 10oC, is dropped into a graduated cylinder of 100°C water. Which statement BEST describes the change
enot [183]

Answer:

D

Explanation:

just took the test

6 0
4 years ago
Read 2 more answers
A tomato of mass 0.18 kg is dropped from a tall bridge. If the tomato has a speed of 11 m/s just before it hits the ground, what
kondor19780726 [428]
The kinetic energy of the tomato is : 

K.E =  1/2 mv^2

K.E = 1/2 x 0.18 kg x 11 m/S^2

K.E = 0.99

Hope this helps
7 0
3 years ago
A force F= (6.70 N)i + (5.60 N)j + (6.60 N)k act on a 9.80 kg mobile object that moves from an initial position of di = (9.10 m)
Mandarinka [93]

Answer:

W = 0.11J

P = 0.0186W

Explanation:

Please see attachment below.

4 0
3 years ago
Current flowing in a circuit depends on two variables. Identify these variables and their relationship to current.
Nuetrik [128]
Wow ! This question reads like it might have come from one of
Faraday or Maxwell's original laboratory notebooks.

Choice-A is the correct one, when you consider what "conductance"
means. Conductance is just 1/resistance .

So when you see
"A) Current is proportionate to the conductance of the circuit and
precisely proportional to the voltage applied across the circuit."

what it's saying is
"Current is inversely proportional to the resistance of the circuit, and
directly proportional to the voltage applied across the circuit."

If you write the equation for all those words, it looks like

I = V / R

and that's correct.
5 0
4 years ago
Read 2 more answers
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