Physics

Physics, 08.02.2021 19:40, bee1538

4. A weightlifter raises a mass mat a constant speed to a height h in time t. Which of the following expressions corresponds with the work done by the weightlifter?
a. mgh
b.-mgh
C. mgh/t
d. -mgh/

answer

Answers: 3

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 03:00, ronniethefun

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

Answers: 2

Physics, 22.06.2019 12:00, jazz8224

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?

Answers: 3

Physics, 22.06.2019 15:10, jvsome8

What does si stand for, when referring to a system of measurement

Answers: 1

Physics, 22.06.2019 18:00, msdsh03

At the negative terminal of the battery the electron has electric potential energy. what happens to this energy as the electron jumps from the negative to the positive terminal?

Answers: 1

Do you know the correct answer?

4. A weightlifter raises a mass mat a constant speed to a height h in time t. Which of the following...

Questions in other subjects:

Konu

Mathematics, 24.02.2020 18:04

In a marketing class of 60 students, the mean and the standard deviation of scores was 70 and 5, respectively. Use Chebyshev's theorem to determine the number of students who score...

Konu

Chemistry, 24.02.2020 18:04

Combustion analysis of a hydrocarbon produced 33.01 g g CO2 C O 2 and 10.15 g g H2O H 2 O . Part A Calculate the empirical formula of the hydrocarbon....

Konu

Physics, 24.02.2020 18:04

A projectile is launched from point A with an initial speed v0 = 100 ft /sec. Determine the minimum value of the launch angle for which the projectile will land at point B....

Konu

Mathematics, 24.02.2020 18:04

A study publishes Selected Topics in Assurance Related Technologies (START) sheets to help improve the quality of manufactured components and systems. One START sheet focuses on a...

Konu

Chemistry, 24.02.2020 18:04

The amino acid isoleucine has pKa values of 2.32 (–COOH) and 9.76 (–NH3+). What is the predominant form of the amino acid at pH = 6.0? Fill in any missing hydrogen atoms and/or cha...

Konu

Physics, 24.02.2020 18:04

A 4.60-kg sled is pulled across a smooth ice surface. The force acting on the sled is of magnitude 6.20 N and points in a direction 35.0o above the horizontal. If the sled starts a...

Konu

English, 24.02.2020 18:04

The best begins with the setting set by the pool pond in the film, we see Georgo on a fram for Why would the director do this what is the director telling us about George's l...

Konu

English, 24.02.2020 18:04

Which statement about sentence structure is true?Writers vary sentence structure and length, depending on the purpose of a piece.Writers use only very struc...

Konu

English, 24.02.2020 18:04

The best analysis of the huntsman based on his words and actions...

Konu

Mathematics, 24.02.2020 18:04

Write this ratio as a fraction in lowest terms. $30 to $80 is...

Other tasks in the category: Physics More task