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Stolb23 [73]
3 years ago
14

A box weighing 210 N is pushed up an inclined plane that is 2.0 m long. A force of 140 N is required. If?

Physics
2 answers:
Serhud [2]3 years ago
8 0

Answer:

d

Explanation:

N76 [4]3 years ago
3 0
D
Step-by-step explanation:
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How is earth outer layer different from a cracked hard-boiled egg?
Aleksandr [31]

Answer:

The Earth holds livings things and even the layer has more complex layers in it (Also it's not white) And of course there are no oceans.

7 0
3 years ago
A roller coaster, traveling with an initial speed of 21 m/s, decelerates uniformly at -3.5
liberstina [14]

Answer:

S = Vo t + 1/2 a t^2       distance traveled

t = (V2 - V1) / a = (0 - 21) / -3.5 = 6 sec       time to stop

S = 21 * 6 - 3.5 * 6^2 / 2 = 63 m        distance traveled

3 0
1 year ago
A group of big city tenants were upset about rising rent for their apartments, and decided to play a prank on the Building Manag
Naya [18.7K]

Answer:

  t = 6 s

Explanation:

This is a free fall exercise

          y = y₀ + v₀ t - ½ g t²

If the balloon is released its initial velocity is zero, when it reaches the floor its height is also zero, we substitute

         0 = y₀ + 0  - ½ g t2

         t = √(2yo / g)

let's calculate

         t = √ (2 176.4 / 9.8)

         t = 6 s

the balloon must be released 6 s before the person reaches the building

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Comentarios

5 0
3 years ago
An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.70 mm. A 21
Inga [223]

Answer:

12353 V m⁻¹ = 12.4 kV m⁻¹

Explanation:  

Electric field between the plates of the parallel plate capacitor depends on the potential difference across the plates and their distance of separation.Potential difference across the plates V over the distance between the plates gives the electric field between the plates. Potential difference is the amount of work done per unit charge and is given here as 21 V. Electric field is the voltage over distance.

E = V ÷ d = 21 ÷ 0.0017 = 12353 V m⁻¹

8 0
3 years ago
The speed of an object and direction of its travel is?
makkiz [27]
Velocity is the answer..

hope that helps
5 0
3 years ago
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