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Irina-Kira [14]
3 years ago
13

Earth attracts a person with a gravitational force of 7.0 × 102 newtons. What is the magnitude of the force with which the indiv

idual attracts Earth?
3.0 × 10² newtons
7.0 × 10² newtons
8.5 × 10² newtons
9.8 × 10² newtons
Physics
1 answer:
ehidna [41]3 years ago
5 0
The best option is B) <span>7.0 × 10² newtons.

</span>If Earth attracts a person with a gravitational force of <span><span>7.0 × 10² </span>newtons, 
the person attracts Earth with a gravitational force of 7.0 × 10² newtons.</span>
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A 10-kg wagon is pulled by a force of 70 Newtons while friction provides 20 Newtons of force. How much acceleration will the wag
kkurt [141]

Answer:

5m/s²

Explanation:

Given parameters:

Mass of wagon  = 10kg

Force of pull  = 70N

Frictional force = 20N

Unknown:

Acceleration of the wagon = ?

Solution:

Frictional force is a force that opposes motion.

The net force is given as:

   Net force  = mass x acceleration

 Force of pull  - Frictional force = mass x acceleration

 Insert the parameters and solve;

     70 - 20  = 10 x acceleration

       50  = 10 x acceleration

      Acceleration  = 5m/s²

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Explanation:

Below is an attachment containing the solution.

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3 years ago
How much mass should be attached to a vertical ideal spring having a spring constant (force constant) of 39.5 n/m so that it wil
mrs_skeptik [129]
The frequency of a simple harmonic oscillator such as a spring-mass system is given by
f= \frac{1}{2 \pi}   \sqrt{ \frac{k}{m} }
where 
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Re-arranging the formula, we get:
m= \frac{k}{4 \pi^2 f^2}
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and the frequency of oscillation:
f=1.00 Hz
we can find the value of the mass attached to it:
m= \frac{39.5 Hz}{4 \pi^2 (1.00 Hz)^2} = 1.00 kg
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What is the definition of a volt in science?
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It is A. a refrigerator cause a alternating current is current that doesn't stop and the refrigerator is plug into the wall.
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