A hair straightener has a resistance of 10.0 ohms while drawing a current of 1 pe
5.0 amperes. What is the power of the straightener? *

250 Watts

Explanation:

We need to use the equation P = (I^2)*R, where P is the power in Watts, I is the current in Amperes, and R is the resistance in Ohms.

Here, we know that I = 5.0 Amperes and R = 10.0 Ohms. Plug in these values:

P = I^2 * R = (5.0)^2 * 10.0 = 250 Watts.

Hope this helps!

P= 250 Watts

Explanation:

Power is given by

P = VI

and V = IR

so

P = I * I *R or I^2R

We know I = 5 Amps and R = 10 Ohms

P = 5^2 * 10

P =25*10

P= 250 Watts

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j