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WARRIOR [948]
3 years ago
9

Find the potential energy of a 2kg ball 15m in the air

Physics
1 answer:
Paraphin [41]3 years ago
8 0
<span>The ball's gravitational potential energy at its peak height was 0.4 joules, and its .... Ignore air resistance and determine (a) the kinetic energy at 28.1 m, (b) the .... At position B, just before it lands, it is falling at 15m/s. a) if the blocks potential ...</span>
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Calcular la resistencia de una varilla de grafito de 170 cm de longitud y 60 mm2. Resistividad grafito 3,5 10-5 Ωm
ozzi

Answer:

R = 0.992 Ω

Explanation:

En esta pregunta, dada la información que contiene, debemos calcular la resistencia de la varilla de grafito.

Matemáticamente,

Resistencia = (resistividad * longitud) / Área De la pregunta;

Resistividad = 3,5 * 10 ^ -5 Ωm

longitud = 170 cm = 1,7 m

Área = 60 mm ^ 2 = 60/1000000 = 6 * 10 ^ -5 m ^ 2

Conectando estos valores a la ecuación anterior, tenemos;

Resistencia = (3.5 * 10 ^ -5 * 1.7) / (6 * 10 ^ -5) =

(3.5 * 1.7) / 6 = 0.992 Ω

3 0
3 years ago
A horse is pulling 53.0 kg plow forward while the ground exerts a 275 N force, and the plow accelerates at 0.222 m/s^2. what is
JulsSmile [24]
Answer:
Magnitude of force the ground exerts on the plow = 263.234 N

Explanation:
Magnitude of force the ground exerts on the plow = Fground - Fplow
We are given that:
Fgound = 275 N
We will now calculate Fplow as follows:
Fplow = mass of horse * acceleration of plow
Fplow = 53 * 0.222
Fplow = 11.766 N

Now, substitute in the above equation to get magnitude of force the ground exerts on the plow as follows:
Magnitude of force the ground exerts on the plow = Fground - Fplow
Magnitude of force the ground exerts on the plow = 275 - 11.766
Magnitude of force the ground exerts on the plow = 263.234 N

Hope this helps :)
3 0
3 years ago
2. Earth exerts a gravitational force on the Sun and the Sun exerts a gravitational force on Earth.
kozerog [31]

Answer: Earth exerts a gravitational force on the sun and the sun exerts a gravitational force on Earth

Its not very strong but strong enough to create tides. Compare the gravitational force the sun exerts on earth to the gravitational force earth exerts on the sun. ... Both because they both exert a force on each other the difference is the object with the greater mass being earth will exert a greater force.

Explanation:

3 0
2 years ago
Question 1
creativ13 [48]

Answer:

Epsilon Eridani

Explanation:

This is in the main sequence as you can see there is an area called "main sequence all you have to do is read all the stars and to see which one is in there and that is The epsilon eridani

6 0
3 years ago
A child drops a ball from a window. The ball strikes the ground in 3 seconds. What is the velocity of the ball the instant befor
nignag [31]

Answer:

29.4 m/s

Explanation:

Given:

v₀ = 0 m/s

a = 9.8 m/s²

t = 3 s

Find: v

v = at + v₀

v = (9.8 m/s²) (3 s) + 0 m/s

v = 29.4 m/s

6 0
2 years ago
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