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m_a_m_a [10]
1 year ago
11

1. During a soccer match, a player tries to kick a goal. The ball hits the left- hand goal post instead of going into the net. T

his happens three times during the match the same player kicks the ball into the left-hand goal post. a) State whether this soccer player is an accurate player, a precise player or neither of the two. Explain your previous answer. b) 2. The following diagrams show two measurements taken by Vernier callipers. The one is the outside diameter of a hollow copper pipe. The other is the inside diameter of the same pipe. مسلسل سلس البلاست Outside measurement he Inside measurement (2​
Physics
1 answer:
kotegsom [21]1 year ago
5 0

Answer: A goal kick is a “direct” kick in soccer, which means any player can score a goal directly from that kick. Although it is rare to see a player score directly from a goal kick, occasionally, it does happen.

Explanation:

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Although the evidence is weak, there has been a concern in recent years over possible health effects from the magnetic fields ge
sergey [27]

Answer:

a

The magnetic field strength is  B = 2 \mu T

Explanation:

From the question we are told that

             The  length line   above the ground  is  R = 20m

              The current of the line is  I  = 200A

              The voltage of the line is V = 110kV

Generally magnetic field strength is mathematically represented as

              B = \frac{\mu_o I}{2 \pi R}

Where  \mu_0 is the permeability of free space  = 4\pi * 10^{-7} N/A^2

             B = \frac{(4\pi * 10^{-7} N/A^2) *200}{2 \pi *20}

                = (2.0*10^{-7})[\frac{200}{20} ]

               = 2*10^{-6}T

              = 2 \mu T

Earths magnetic field is approximately given as 50 \mu T

   So the percentage would be

                           = \frac{Magnetic \ Field \ Intensity \ Of  \ Line}{Earth's \ Magnetic \ Field} * 100

                          = \frac{2 \mu T }{50 \mu T } * 100

                          =4%            

         

           

             

               

7 0
3 years ago
What will happen to the force between 2 charged objects if the mass of one of the charges is doubled and the distance between th
bekas [8.4K]

The size of the force varies inversely as the square of the distance between the two charges. Therefore, if the distance between the two charges is doubled, the attraction or repulsion becomes weaker, decreasing to one-fourth of the original value
7 0
3 years ago
The milky way is often considered to be an intermediately wound, barred spiral, which would be type ________ according to hubble
lora16 [44]
SBb type spiral. Its a type B because its not too tightly wound but its still too tight to be a type C
4 0
3 years ago
Assuming a typical efficiency for energy use by the body, how many slices of pizza must you eat to walk for 2.5 h at a speed of
larisa86 [58]

Answer:

2.7 Pizzas.

Explanation:

The power required to walk through 5km in 1 hour is 380W.

A watt is basically Jules per second, then we need to standardized this measurement to second.

5km/hr is equal to,

\frac{5km}{hr}*\frac{1hr}{3600s}*\frac{1000m}{1km}=1.389m/s

Walking by 2.5 hours is equal to a distance of,

d=v*t=1.389*(2.5*3600) = 12500m

The total energy required then would be,

E = \frac{380J}{1.389m/s}(12500)=3.4199*10^6J

Then we know that one pizza slice gives 1260*10^3J of energy, the total pizza needed are,

\eta = \frac{3.4199*10^6}{1260*10^3} = 2.7142

<em>Then you need to buy 3 pizza.</em>

6 0
4 years ago
A heavy flywheel is accelerated (rotationally) by a motor thatprovides constant torque and therefore a constant angularaccelerat
larisa86 [58]

Answer: (a) t1 = omega1/alpha

(b) theta1 = 1/2 * alpha*theta1^2

(c) t2 = omega2/5*alpha

Explanation: see attachment

4 0
3 years ago
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