All categories

3 years ago

Magnitude of the normal force exerted by en in the figure below. What is the

Physics

1 answer:

vekshin13 years ago

6 0

Answer:

Explanation:

Reason is that the suitcase is exerted downward and when it moves downward the equation is mgsin tita

You might be interested in

Which molecules are in put in photosynthesis

Dmitry_Shevchenko [17]

Answer:

During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. These sugar molecules are the basis for more complex molecules made by the photosynthetic cell, such as glucose.

Explanation:

yes.

6 0

3 years ago

Read 2 more answers

HELP ASAP!!! Some bands hate playing in school gyms because sound waves easily reflect off the walls and floor. What could you d

Virty [35]

Answer:

I would recommend placing something on the ground or on the walls of your gym to damped the echos.

Explanation:

6 0

3 years ago

When a mass of 5 kg hangs from a vertical wire of length 2 m, waves travel on this wire with a speed of 10 m/s. What will the sp

liubo4ka [24]

Answer:

New speed of the wave, v = 5.77 m/s

Explanation:

It is given that,

Mass of the object, m = 5 kg

Length of the wire, L = 2 m

Speed of the wave, v = 10 m/s

The speed of wave in terms of tension is given by :

$v=\sqrt{\dfrac{T}{\mu}}$

$10=\sqrt{\dfrac{T}{\mu}}$

If the wire is replaced with one with the same length but three times as heavy, the mass per unit length is given by :

$\mu'=\dfrac{3m}{L}$

New speed of the wave is given by :

$v'=\sqrt{\dfrac{T}{\mu'}}$

$v'=\dfrac{1}{\sqrt{3} }\sqrt{\dfrac{T}{\mu}}$

$v'=\dfrac{10}{\sqrt{3} }$

v' = 5.77 m/s

So, the speed of the new wave is 5.77 m/s. Hence, this is the required solution.

4 0

3 years ago

Read 2 more answers

1.A motor is rated at 1.5 hp. At what speed in m/s can this motor raise a

hodyreva [135]

Answer:

1. 0.57 m/s

2. 25 Watts

Explanation:

1. Determination of the speed.

We'll begin by converting 1.5 hp to watt (W). This can be obtained as follow:

1 hp = 745.7 W

Therefore,

1.5 hp = 1.5 hp × 745.7 W / 1 hp

1.5 hp = 1118.55 W

Next, we shall determine the force. This can be obtained as follow:

Mass (m) = 200 Kg

Acceleration due to gravity (g) = 9.8 m/s²

Force (F) =?

F = m × g

F = 200 × 9.8

F = 1960 N

Finally, we shall determine the speed. This can be obtained as follow:

Power (P) = 1118.55 W

Force (F) = 1960 N

Speed (v) =?

P = F × v

1118.55 = 1960 × v

Divide both side by 1960

v = 1118.55 / 1960

v = 0.57 m/s

Thus, the speed is 0.57 m/s

2. Determination of the power.

We'll begin by calculating the velocity. This can be obtained as follow:

Displacement = 10 m up

Time = 20 s

Velocity =?

Velocity = Displacement / time

Velocity = 10 / 20

Velocity = 0.5 m/s

Finally, we shall determine the power. This can be obtained as follow:

Velocity (v) = 0.5 m/s

Force (F) = 50 N

Power (P) =?

P = F × v

P = 50 × 0.5

P = 25 Watts

Therefore, the power required to lift the bucket is 25 Watts

4 0

3 years ago

If you drop an object from a height of 1.4 m, it will hit the ground in 0.53 s. If you throw a baseball horizontally with an ini

insens350 [35]

Answer:

The ball to hit the ground in 0.53 s.

Explanation:

Given that,

Height = 1.4 m

Time t = 0.53 s

Initial speed = 35 m/s

We need to calculate the time when the ball to hit the ground

Using equation of motion

$s_{y}=u_{y}t-\dfrac{1}{2}gt^2+h_{0}$

Where, s= vertical height

u= vertical velocity

t = time

h = height

Put the value in equation

$0=0-\dfrac{1}{2}\times9.8\times t^2+1.4$

$t^2=\dfrac{1.4}{4.9}$

$t=\sqrt{\dfrac{1.4}{4.9}}$

$t=0.53\ s$

Hence, The ball to hit the ground in 0.53 s.

5 0

3 years ago