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Rainbow [258]
2 years ago
12

PLS HELP!!

Physics
1 answer:
Alenkasestr [34]2 years ago
7 0

Answer:

As an object falls from rest, its gravitational potential energy is converted to kinetic energy.

Explanation:

It converts to kinetic energy because it is moving

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You have just moved into a new apartment and are trying to arrange your bedroom. You would like to move your dresser of weight 3
Mazyrski [523]

Answer:

0.

Explanation:

(A) Work done on the dresser which will be given as :

W = F d cos \theta

where, F = weight of the dresser = 3500 N

d_{expected} = 5m

However you can move the dresser, that is a real distance,

d = 0 m

Substituting,

W = (0) F(3500)cos (\theta) (\theta is the angle at which you apply the force)

W = 0 J

8 0
3 years ago
Hello guys I have a quick question and please help me! Thanks!
xenn [34]

Answer: 4 herz is the answer!

Explanation:

6 0
2 years ago
Read 2 more answers
A force of 10 N causes a spring to extend by 20 mm. Find a) the spring constant of the spring in N/m b) the extension of the spr
suter [353]

(a) The spring constant is 500 N/m.

(b) The extension of the spring when 25 N force is applied is 0.05 m.

(c) The applied force to cause an extension of 5 mm is 2.5 N.

The given parameters:

  • Applied force, F = 10 N
  • Extension of the spring, x = 20 mm

The spring constant is calculated as follows;

F = kx\\\\k = \frac{F}{x} \\\\k = \frac{10}{20 \times 10^{-3}} \\\\k = 500 \ N/m

The extension of the spring when 25 N force is applied is calculated as follows;

F = kx\\\\x = \frac{F}{k} \\\\x = \frac{25}{500} \\\\x = 0.05 \ m

The applied force to cause an extension of 5 mm is calculated as follows;

F = kx\\\\F = 500 \times 5 \times 10^{-3}\\\\F = 2.5 \ N

Learn more about Hook's law here: brainly.com/question/12253978

7 0
2 years ago
The shape of a sign gives you a clue about the information contained on the sign.
irakobra [83]
Yeah, like a stop sign. We know it is most likely a stop sign since it has 8 sides or is an octagon. 
I hope I helped!
7 0
3 years ago
A slingshot is used to launch a stone horizontally from the top of a 20.0 meter cliff. The stone lands 36.0 meters away.
alisha [4.7K]
A) 

     It is a launch oblique, therefore the initial velocity in the vertical direction is zero. Space Hourly Equation in vertical, we have:

S=S_{o}+v_{o}t+ \frac{at^2}{2} \\ 20= \frac{10t^2}{2} \\ t=2s
 
     Through Definition of Velocity, comes:

\Delta v=  \frac{\Delta S}{\Delta t}  \\ v_x= \frac{36}{2}  \\ \boxed {v_{x}=18m/s}


B)
 
     Using the Velocity Hourly Equation in vertical direction, we have:

v_{y}=v_{y_{o}}+gt \\ v_{y}=10\times2 \\ \boxed {v_{y}=20m/s}
  
     The angle of impact is given by:

cos(\theta) =\frac{v_{x}}{v_{y}}  \\ cos(\theta) = \frac{18}{20}  \\ cos(\theta) =0.9 \\ arccos(0.9)=\theta \\ \boxed {\theta \approx 25.84}


If you notice any mistake in my english, please let me know, because i am not native.

7 0
2 years ago
Read 2 more answers
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