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Lina20 [59]
3 years ago
8

Check my work. thank u sm!​

Physics
1 answer:
Mashcka [7]3 years ago
7 0

Answer:

its correct no need to change anything :))

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a golfer hits a golf ball giving it an initial velocity 30m/s at an angle 45° from the horizontal. ignoring air resistance on a
Lynna [10]

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90 meters.

Explanation:

The correct answer is: B.) 90 m

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The body attempts to fight off an infection by<br><br> Sleeping<br> Exercise<br> Fever<br> Coughing
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The body fights off an infection by a fever since the higher temperature will denature what is causing the infection
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If you see something not being right on a project you are working-even if it isn't you doing the wrong thing-it is your ethical
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Is this a "true or false" question?

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Read 2 more answers
calculate the electrical potential at a point P a distance of 1 m from either two to charge of +10 micro coulomb and -5 micro co
Jobisdone [24]

Answer:

a)  V = 45 10³ V, b) U = 4.59 J

Explanation:

a) The electric potential for a series of point charges is

         V = k ∑ \frac{q_i}{r_i}

in this case point P is at a distance of 1 m from each charge, so the point is located perpendicular to the charges at its midpoint

 

         V = k ( \frac{q_1}{r} + \frac{q_2}{r})

         V = 9 10⁹ (10 - 5/ 1) 10⁻⁶

         V = 45 10³ V

b) the potential energy is

           U = k (  \frac{q_1q}{r} + \frac{q_2q}{r} + \frac{q_1q_2}{r_2} )

where r = 1m and r₂ is the distance between the two charges r₂ = 0.10 m

           U = 9 10⁹ (10 2 / 1 - 5 2/1 - 10 5 /0.10) 10⁻¹²

           U = 9 10⁻³  510

           U = 4.59 J

3 0
3 years ago
How long must a simple pendulum be if it is to make exactly one swing per four seconds? (That is, one complete oscillation takes
cricket20 [7]

Answer:

Length of the pendulum will be 3.987 m

Explanation:

We have given time period of the pendulum T = 8 sec

Acceleration due to gravity g=9.81m/sec^2

We have to find the length of the simple pendulum

We know that time period of the simple pendulum is given by

T=2\pi \sqrt{\frac{l}{g}}

8=2\times 3.14 \sqrt{\frac{l}{9.81}}

l=3.987m

So length of the pendulum will be 3.987 m

3 0
3 years ago
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