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Xelga [282]
2 years ago
7

9. What is the force caused by gravity?

Physics
2 answers:
kramer2 years ago
7 0

Answer:

A DOWNWARD FORCE

Explanation:

cos gravity acts <u>down</u> on the  earths surface.

MAVERICK [17]2 years ago
5 0
On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth's mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects. At Earth's surface the acceleration of gravity is about 9.8 metres (32 feet) per second per second.
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Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the charge of object 1 is doubled AND the charge
lbvjy [14]

Answer:

432 units

Explanation:

Let the charges be q and Q separated by a distance r. The electrostatic force , F = kqQ/r² = 72 units. If q = 2q and Q = 3Q, then the new electrostatic force is

F = k × 2q × 3Q/r² = 6kqQ/r² = 6 × 72 = 432 units

5 0
3 years ago
Inceptual Physics - Wavos Test - Semester 1 - 2021
Dvinal [7]

Answer:

A thats answer thankyou

4 0
2 years ago
If you increase the frequency, what happens to the velocity of the wave?
STALIN [3.7K]

Answer:

Wave frequency does not affect wave speed. An increase in wave frequency caused a decrease in wavelength while the wave speed remained constant. ... Rather, the speed of the wave is dependent upon the properties of the medium such as the tension of the rope.

7 0
2 years ago
Which statement is true?
vlabodo [156]
Correct Answer is B.

In a parallel circuit, the voltage is same across all the branches however the current in each branch is different and depends on the resistance of that branch. 

Points to Remember:
1) In series circuit current remains the same and voltage varies
2) In parallel circuit voltage remains the same and current varies
8 0
3 years ago
Read 2 more answers
A pebble is dropped into a calm pond, causing ripples in the form of concentric circles. The radius of the outer ripple is incre
goblinko [34]

Answer:

The rate of area of the disturbed water changing is 12.56 \frac{ft^{2} }{sec}

Explanation:

Given:

Radius increasing rate \frac{dr}{dt}  = 6 \frac{in}{sec}

Radius r = 4 ft

Now we convert radius increasing rate into feet per second,

   \frac{dr}{dt} = \frac{6}{12} \frac{ft}{sec}

Here we have to find total area rate \frac{dA}{dt}

    A = \pi r^{2}

   \frac{dA}{dt} = \frac{d(\pi r^{2}  )}{dt}

   \frac{dA}{dt} =\pi  \frac{d( r^{2}  )}{dt}

   \frac{dA}{dt} = 2\pi  r\frac{dr  }{dt}

   \frac{dA}{dt} = 2\pi \times 4 \times \frac{6}{12}

   \frac{dA}{dt} = 12.56 \frac{ft^{2} }{sec}

Therefore, the rate of area of the disturbed water changing is 12.56 \frac{ft^{2} }{sec}

6 0
3 years ago
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