1 (3 points)

A hydraulic lift consists of two pistons that connect to each other by an incompressible fluid. If one piston has an area of 0.1

hjlf

You have:

A1= 0.15 m²
A2=6.0 m²
F1=130.0 N

To solve this problem you must use the pressure formula, as below:

P1=P2
F1/A1=F2/A2

Then, you have:

m2=A2xF1/A1xg

g=9.81 m/s² (This is the acceleration of gravity)

When you substitute the values in m2=A2xF1/A1xg, you obtain:

m2=(0.60 m² x 130.0 N)/(0.15 m² x 9.81 m/s²)

The answer is:

m2=530 Kg

5 0

4 years ago

You are standing on a sheet of ice that covers the football stadium parking lot in Buffalo; there is negligible friction between

9966 [12]

Answer:

(a) 0.061 m/s

(b) 0.103 m/s

Explanation:

From the law of conservation of momentum, the sum of initial momentum equals the sum of final momentum

Momentum, p=mv where m is the mass and v is the velocity

$m_1v_1=(m_1+m_2)v_c$ where $v_c$ is the common velocity, $v_1$ is the velocity of the ball $m_1$ and $m_2$ are masses of the ball and person respectively

Substituting the given values then

$0.400\times 11.5 = (0.400+75)v_c\\v_c=0.061007958\approx 0.061 m/s$

(b)

Momentum, p=mv where m is the mass and v is the velocity

$m_1v_1=m_1v_2+m_2v_3$

$v_1$ is the velocity of the ball , $v_2$ is the velocity of ball afterwards and $v_3$ is your speed, $m_1$ and $m_2$ are masses of the ball and person respectively. Since it bounces back, we give it a negative value hence

$0.400\times 11.5= 0.4\times -7.8+75v_3\\v_3=0.102933333\approx 0.103 m/s$

3 0

3 years ago

Which is a dopant for a p-type semiconductor? arsenic indium phosphorus antimony

erastova [34]

Answer:

As opposed to n-type semiconductors, p-type semiconductors have a larger hole concentration than electron concentration.

Explanation:

In p-type semiconductors, holes are the majority carriers and electrons are the minority carriers. A common p-type dopant for silicon is boron or gallium. hope this you :)

4 0

3 years ago

Which of the following must be true for “P if and only if Q” to be true?

erastovalidia [21]

Explain or message me what your trying to ask!

6 0

4 years ago

10. A spring whose composition is not completely known might be either bronze (sp gr 8.8) or brass (sp gr 8.4). It has a mass of

frez [133]

The element used is of bronze.

Now before we find out how we got the answer as bronze, firstly let us understand about the device we are talking about. That is, spring.

What exactly is a spring?

A spring is defined as a device that changes its shape in response to an external force, returning to its original shape when the force is removed. If we apply force or pressure in this device, it will change its shape but the moment we stop applying force, it will come back to its original state.

This means that this device is made of something flexible. So, the material it is made up of should also be flexible in nature.

How to find out flexibility of spring?

Flexibility of spring can be found as q = f Q, where f is the spring flexibility.

Here, in this question, we are given the mass of element in air and water. This shows a slight comparison between the mass of that particular element in air and water and thus, we get to know it is trying to draw our attention towards density.

Here, we have mass in air and water, thus, we can determine the density.

From these numbers, we can know that the density given is of bronze.

Hence, the element used is Bronze.

To know more spring aggregate, refer : brainly.com/question/20215636

#SPJ4

7 0

1 year ago