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3 years ago

Explain what voltage,current, resistance are and how they relate to Ohms law. Then give examples

1 answer:

3 0

Voltage is the difference in charge between two points.
Current is the rate the charge flows
Resistance is the tendency a material has to resist the flow of charge (current)
Combining voltage resistance and current Ohm developed the formula
V (Voltage)= I (Current) x R (Resistance)

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A skier leaves the horizontal end of a ramp with a velocity of 31.0 m/s and lands 156.3 m from the base of a ramp how high is th

BartSMP [9]

<u>Answer:</u>

The height of ramp = 124.694 m

<u>Explanation:</u>

Using second equation of motion,

$s = ut + \frac{1}{2}at^2$

From the question,

u = 31 m/s; s = 156.3 m, a=0

substituting values

$156.3 = 31\times t + 0$

t = $\frac{156.3}{31 }$

= 5.042 s

Similary, for the case of landing

t = 5.042 s; initial velocity, u =0

acceleration = acceleration due to gravity, g = 9.81 $m/s^2$

Substituting in $h = ut + \frac{1}{2}gt^2$

$h = 0 + \frac{1}{2} \times 9.81 \times (5.042)^2$

h = 124.694 m

So height of ramp = 124.694 m

3 0

3 years ago

Use a(n) ________ near water sources in the kitchen or bathroom for electrical safety.

Papessa [141]

Answer:

I think it would be GFI outlet

Explanation:

Ground Fault Circuit Interrupter (GFI) device protects us from receiving electric shocks from faults in the electrical devices we use in our home. (resource Google)

4 0

3 years ago

Define reflection and give to examples define refraction and give two examples

pickupchik [31]

Reflection- looking at yourself in a mirror and seeing the moon in the sky
Refraction- putting on your glasses in order to see more clearly and the pencil looks like it’s bent when you stick one end of it in water.

6 0

3 years ago

determinar el valor de la velocidad que lleva un cuerpo cuya masa es 3kg y su energia cinetica es de 400Joule

Korolek [52]

Answer:

This is what they said in english if everyone was wondering

Explanation:

determine the value of the velocity carried by a body whose mass is 3kg and its kinetic energy is 400Joule

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3 years ago

A young man sets a goal to compete in a marathon in two weeks. He started training last week by exercising three to four times a

gogolik [260]

The aspect of his fitness program that could keep the young man from achieving his goal would potentially be the exercise with his friend. His friend could be a hindrance to his motivation to do more or to continue. If he's so attached with exercising with his friend and his friend decides to stop, then he would probably lose motivation.

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3 years ago

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