Ask question

Ask question

All categories

2 years ago

7

In order to move a bag of dog food across a room that measures 8 meters in length, you apply 10 Newtons of force. How much work

was done?

1 answer:

Lady bird [3.3K]2 years ago

7 0

Answer:

80 joules of work

Explanation:

Use W=F·d

W=10N(8M)= 80 Joules

You might be interested in

If the range of the projectile is 4.3 m, the time-of-flight is T = 0.829 s, and air resistance is negligible, determine the foll

ankoles [38]

Answer

given,

range of the projectile = 4.3 m

time of flight = T = 0.829 s

$v =\dfrac{d}{T}$

$v =\dfrac{4.3}{0.829}$

v = 5.19 m/s

vertical component of velocity of projectile

v_y = gt'

$v_y = 9.8 \times {\dfrac{T}{2}}$

$v_y = 9.8 \times {\dfrac{0.829}{2}}$

$v_y =4.06\ m/s$

a) Launch angle

$\theta = tan^{-1}(\dfrac{v_y}{v})$

$\theta = tan^{-1}(\dfrac{4.06}{5.19})$

θ = 38°

b) initial speed of projectile

$v = \sqrt{v_x^2 + v_y^2}$

$v = \sqrt{5.19^2 + 4.06^2}$

v = 6.59 m/s

c) maximum height reached by the projectile

$y_{max}=v_{avg}t'$

$y_{max}=\dfrac{1}{2}v_y\dfrac{T}{2}$

$y_{max}=\dfrac{1}{2}\times(g\dfrac{T}{2})\times\dfrac{T}{2}$

$y_{max}=\dfrac{gT^2}{8}$

7 0

3 years ago

Does fire use energy??

serious [3.7K]

No fire uses oxygen sparks and flammable wood or whatever you choose to burn

6 0

3 years ago

How do you find the number of neutrons

sammy [17]

the mass number minus the atomic number

8 0

2 years ago

What is a tool that measures the size of a force

MakcuM [25]

<span>this is a dynamometer</span>

3 0

3 years ago

How do particles move differently in transverse waves and in surface water waves?

elixir [45]

The particles always move parallel and perpendicular to the waves. The waves which are in the water moves a circle. Both up and down and back and forth.

Good luck :)

3 0

3 years ago