1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ber [7]
3 years ago
12

Joel uses a force of 50 Newtons to hold two weights 0.60 meters above his head. How much work is Joel doing on the weights?

Physics
1 answer:
sweet-ann [11.9K]3 years ago
7 0
30 J w=(force)(displacement) so W=(50N)(.6m) which equals 30J
You might be interested in
A baseball leaves a bat with a horizontal velocity of 20.0 m/s. When it has left the bat for a time of 0.250 s (Assume air resis
miss Akunina [59]

Answer:

The distance is 5 m.

Explanation:

Given that,

Horizontal velocity = 20.0 m/s

Time t = 0.250 s

We need to calculate the horizontal distance

The distance traveled by the baseball with horizontal velocity in time t is given by

Using formula for horizontal distance

d = v\times t

d = 20.0\times0.250

d=5\ m

Hence, The distance is 5 m.

5 0
3 years ago
During a blackout, you are trapped in a tall building. you want to call rescuers on your cell phone, but you can't remember whic
Gennadij [26K]

Let the height where we are trapped is H

now to find the time to reach the key at the bottom is given as

y = v_i t + \frac{1}{2}at^2

now we have

H = \frac{1}{2}gt^2

t = \sqrt{\frac{2H}{g}}

now if the speed of sound is considered to be 340 m/s then time taken by the sound to reach at the top is given as

t = \frac{H}{340}

now the total time is given as

\sqrt{\frac{2H}{g}} + \frac{H}{340} = 3.27

now by solving above equation we have

H = 48 m

now height of one floor is 3 m

so our position must be

N = \frac{48}{3} = 16 th \:floor

3 0
3 years ago
SCIENCE
aivan3 [116]

Answer:

c is trueeeeeeeeeeeeeee

7 0
3 years ago
Which statement about sodium chloride is correct?
kvasek [131]

Answer:

the sodium atom and the chlorine atoms share electrons to form ionic bonds

5 0
3 years ago
What is wave? What does a wave carry with it​
Cerrena [4.2K]
A wave carries energy from a source to a point some distance away. A wave is reflected by a barrier. The reflected wave moves away from the barrier at an angle that is equal to the angle with which the incoming wave moved towards the barrier. When a wave is slowed down, it refracts—that is, changes direction.
6 0
2 years ago
Other questions:
  • Neutron stars are smaller in size than less massive white dwarfs. <br> a. True <br> b. False
    10·1 answer
  • A CD spins at a constant angular velocity of 5.0 revolutions per second clockwise.
    10·1 answer
  • A forklift raises a crate weighing 8.35 × 102 newtons to a height of 6.0 meters. What amount of work does the forklift do?
    12·2 answers
  • Physical Science Pre-Test 2020-2021 Question: 1-10 The distance between Earth and the Moon was determined by measuring the time
    7·1 answer
  • A small fan has blades that have a radius of 0.0600 m. When the fan is turned on, the tips of the blades have a tangential accel
    5·1 answer
  • What force is required to accelerate to 10 kg object to 5.9 m/s/s?
    6·1 answer
  • An elevator of 3 × 10^4N is raised to a height of 100m in 20s . The work done by electric motor is equivalent to ?​
    15·1 answer
  • Una barra conductora de L = 0,9 m se mueve sin fricción sobre dos rieles conductores horizontales, Unos extremos de los rieles s
    14·1 answer
  • 4. Uncle Harry weighs 180 pounds. What is his mass in kilograms?
    5·1 answer
  • The ____ of emitted light depends directly on the energy between the two orbits and this determines the color of the light
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!