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katrin2010 [14]
3 years ago
7

A volleyball experiences 494 Ns of impulse over a time period of 7 seconds. What was the magnitude of the force that acted on th

e volleyball during this time period?
Physics
1 answer:
expeople1 [14]3 years ago
6 0

Answer:

70.6N

Explanation:

Given parameters:

Impulse  = 494Ns

Time  = 7s

Unknown:

Force applied = ?

Solution:

To solve this problem, we use the formula of impulse;

      Impulse = Force x time

Now insert the parameters and solve;

       494  = Force x 7

            Force  = \frac{494}{7}  

          Force  = 70.6N

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A graduated cylinder.measures 15.3 mL. Convert this measurement to DaL
ololo11 [35]

Answer:

0.000153DaL  

Explanation:

We have been given:

         15.3mL to convert to DaL

DaL is a unit of volume which indicates a decaliter.

 This implies that;

             1 Da L  = 1 x 10²L

So:

               1 mL  = 1 x 10⁻³L

       So 15.3mL will give 15.3 x 10⁻³L

So;

           1 x 10²L   =  1 DaL  

      15.3 x 10⁻³L  will give \frac{15.3 x 10^{-3} }{1 x 10^{2} }   = 15.3 x 10⁻⁵DaL

Therefore, this is 0.000153DaL  

           

5 0
3 years ago
An object slides along a curved track of negligible friction, as shown in the figure. The potential energy U of the object as a
balandron [24]

Answer:

E) The object achieves its maximum speed at approximately x=3m.

Explanation:

Since the object is moving in gravitational field

potential energy + kinetic energy = constant = 14 J

At  x = 3 m , potential energy is minimum that is zero

kinetic energy will be maximum .

Kinetic energy = 14 - 0 = 14 J

Hence option ( E ) is the answer.

5 0
3 years ago
Calculate the wavelength of light emitted when each of the following n=5 n=3
denis-greek [22]
When it transmits from n=5 to n=3, 
∧ = Rh [ni - nf]
∧ = Rh [1/3-1/5]
∧ = Rh 2/15

So, your final answer is Rh * 2/15
Where, Rh = Rydberg's constant

Hope this helps!
4 0
3 years ago
A mixture that appears to only contain 1 substance is a ?
WARRIOR [948]
A mixture that appears to contain only one substance is a. homogenous mixture.
4 0
3 years ago
Read 2 more answers
A runner achieves a velocity of 11.1 m/s, 9 sec after he begins. What is his
Elena-2011 [213]

Answer:

1.23 m/s²

Explanation:

Given:

v₀ = 0 m/s

v = 11.1 m/s

t = 9 s

Find: a

Equation:

v = at + v₀

Plug in:

11.1 m/s = a (9 s) + 0 m/s

a = 1.23 m/s²

The runner's acceleration is 1.23 m/s².

7 0
3 years ago
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