a girl performed 50j of work lifting a heavy box it took her 5 seconds to lift the box what is her power

Physics

1 answer:

son4ous [18]2 years ago

3 0

Answer:

10 W

Explanation:

Power is work over time.

P = W / t

P = 50 J / 5 s

P = 10 W

You might be interested in

What is true about energy that is added to a closed system?

Setler [38]

The correct answer is B

6 0

3 years ago

Read 2 more answers

A book is pushed across the table by a student. The student stops pushing on the book and the book slows down and stops. The for

VashaNatasha [74]

A. inertia

Because it has to do with the motion of something, especially if it changes its pace. In this example, the book's motion, when sliding on the table, decreased because of less force being given off from the student.

3 0

3 years ago

Read 2 more answers

Một dây dẫn đặt trong không khí có dòng điện I = 12A chạy qua, được gấp thành hình vuông cạnh a = 10cm. Xác định vectơ cường độ

disa [49]

Answer:

The net magnetic field ta the center of square is $1.36\times10^{-4} T$ .

Explanation:

Current, I = 12 A , side ,a = 10 cm = 0.1 m

Let the magnetic field due to the one side is B.

The magnetic field is given by

$B = \frac{\mu o}{4\pi}\times \frac{I}{r}\times \left (Sin A +Sin B \right )\\\\B = 10^{-7}\times \frac{12}{0.05}\times \left ( sin 45 + sin 45 \right )\\\\B = 3.4\times 10^{-5} T$