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3 years ago

What is an inclined plane? How does it make our work easier?

1 answer:

7 0

An inclined plane is a simple machine consisting of a sloping surface,used for raising heay bodies and it is easier to move an object.

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Answer quick to get brain list but not wrong

Studentka2010 [4]

Answer:

option c.

option c.38° and 42°

6 0

3 years ago

Calcula la energia potencial de Tamara que tiene una mas de 50kg y se encuentra, 80 metros arriba en el borde de un edificio

Ilya [14]

Responder:

39200 J

Explicación:

Dado:

Masa de Tamara (m) = 50 kg

Altura a la que se encuentra Tamara (h) = 80 m

Aceleración debido a la gravedad (g) = 9.8 m / s²

La energía potencial de un objeto de masa 'm' ubicada a una altura 'h' sobre el suelo se da como:

$U=mgh$

Ahora, conecte los valores dados y resuelva la energía potencial. Esto da,

$U=50\times 9.8\times 80\\\\U=39200\ J$

Por lo tanto, la energía potencial de Tamara ubicada a una altura de 80 m es 39200 J.

8 0

4 years ago

If you push on a wall with a force of 200 N, with what force does the wall push back?

PSYCHO15rus [73]

200 N, that is if the force is balanced and the wall doesn't move

8 0

3 years ago

As an airplane is taking off at an airport its position is closely monitored by radar. The following three positions are measure

Sergeeva-Olga [200]

Answer: acceleration a = 25m/s^2

Explanation:

Given that:

The plane travels with constant acceleration

x1 = 241.22 m at t1 = 3.70 s

x2 = 297.60 m at t2 = 4.20 s

x3 = 360.23 m at t3 = 4.70 s.

We need to calculate the velocity in the two time intervals.

Interval 1:

Average Velocity v1 = ∆x/∆t = (x2 - x1)/(t2-t1)

v1 = (297.60-241.22)/(4.20-3.70) = 112.76m/s

Interval 2:

Average Velocity v2 = ∆x/∆t = (x3-x2)/(t3-t2)

v2 = (360.23-297.60)/(4.70-4.20)

v2 = 125.26m/s

Acceleration:

Acceleration a = ∆v/∆t

∆v = v2-v1 = 125.26m/s-112.76m/s = 12.5m/s

∆t = change in average time of the two intervals = (t3-t1)/2 = (4.70-3.70)/2 = 0.5s

a = 12.5/0.5 = 25m/s^2

4 0

3 years ago

Consider two parallel wires carrying current in the same direction. Which one of the following statements is true concerning thi

Sedbober [7]

Answer:A the two wire will attract each other

Explanation:

When current is flowing in a wire it is surrounded by magnetic field whose direction can be given by right hand thumb rule.

If current is in direction of your thumb then wrapping of fingers will give the direction of magnetic field.

If two wires with current in same direction flows then the combined magnetic field will be constructive in nature and thus they attract each other.

force on second wire due to first wire is

$F_{21}=I_2\vec{L_2}\times B_1$ which will be towards the first wire

3 0

4 years ago