3 years ago

5. A little boy tries to push a heavy cupboard. He uses a force of 400 N, but he is unable to move

Physics

1 answer:

ad-work [718]3 years ago

8 0

Answer:

NO HAY TRABAJO REALIZADO YA QUE EL NIÑO NO PUDO MOVER

EL ARMARIO, PARA QUE HAYA TRABAJO DEBE HABER DESPLAZAMIENTO.

Explanation:

You might be interested in

The quantum theory of radiation reflects:

fenix001 [56]

Answer:

The electromagnetic theory of light , that's the answer

8 0

3 years ago

Estimate the linear separation (in kilometers) of two objects at a distance of 2.6 × 108 km that can just be resolved by an obse

cestrela7 [59]

Answer:

34892 km

34.892 km

Explanation:

L = Distance of two objects = $2.6\times 10^8\ km$

$\lambda$ = Wavelength = 550 nm

When d = Diameter of pupil = 5 mm

Linear separation

$\frac{D}{L}=\frac{1.22\lambda}{d}\\\Rightarrow D=\frac{1.22\lambda L}{d}\\\Rightarrow D=\frac{1.22\times 550\times 10^{-9}\times 2.6\times 10^8\times 10^3}{5\times 10^{-3}}\\\Rightarrow D=34892000\ m=34892\ km$

Linear separation = 34892 km

When d = 5 m

$\frac{D}{L}=\frac{1.22\lambda}{d}\\\Rightarrow D=\frac{1.22\lambda L}{d}\\\Rightarrow D=\frac{1.22\times 550\times 10^{-9}\times 2.6\times 10^8\times 10^3}{5}\\\Rightarrow D=34892\ m=34.892\ km$

Linear separation = 34.892 km

6 0

3 years ago

A car is moving at 18 m/s when it accelerates at 8 m/s2 for 2 sec. What is his new velocity ?

ra1l [238]

Vf= at + Vi
Since at = 8m/s2 * 2 = 16m/s2
Vi=18m/s
=>Vf = 16m/s2 + 18m/s = 34m/s
So, the new velocity is 34m/s

5 0

4 years ago

WHICH CELL HAS THE BETTER SURVIVAL PLAN? AN ANIMAL OR PLANT CELL? SUPPORT WITH FACTS (WILL GIVE BRAINLIEST ANSWER!)

Elis [28]

if im not mistaken plant cells go through a stage called photosynthesis meaning the cells can create it's own energy (food) off of water, Co2 and sunlight.

4 0

3 years ago

How does the mass of an object affect its acceleration?

solong [7]

Answer:

as the mass of an object is increased, the acceleration of the object is decreased & vice-versa.

Explanation:

hope this helps!

3 0

3 years ago