The given circuit has, $R = 75 ohm$ resistor (the unit is wrong i question because resistor's unit is ohm not Ampere).
Current flowing through the circuit is $I = 2.0 A$ .

$or,$ $P = 2^{2} * 75$

$or,$ $P= 4*75$

$or$ , $P= 300 W$ .

7 0

3 years ago

xxMikexx [17]

Answer:

30.81°

Explanation:

θ₁ = angle of incidence = 50°

θ₂ = Angle of refraction

n₂ = Refractive index of glass = 1.5

n₁ = Refractive index of air = 1.0003

From Snell's Law

Using Snell's law as:

$n_1\times {sin\theta_1}={n_2}\times{sin\theta_2}$

$1.0003\times {sin50}={1.50}\times{sin\theta_2}$

Angle of refraction= sin⁻¹ 0.5122 = 30.81°.

3 0

4 years ago

mina [271]

Answer:

4.0 m/s

Explanation:

In the first part of the run, the athlete runs a distance of

$d_1 = 300 m$

at a speed of

$v_1 = 3.0 m/s$

So, the time he/she takes is

$t_1 = \frac{d_1}{v_1}=\frac{300}{3.0}=100 s$

In the second part of the run, the athlete covers an additional distance of

$d_2 = 300 m$

with a speed

$v_2 = 6.0 m/s$

So, the time taken in this second part is

$t_2 = \frac{d_2}{v_2}=\frac{300}{6.0}=50 s$

So, the total distance covered is

d = 300 m + 300 m = 600 m

And the total time taken

t = 100 s + 50 s = 150 s

Therefore, the average speed for the entire trip is

$v=\frac{d}{t}=\frac{600}{150}=4.0 m/s$

4 0

4 years ago