All categories

3 years ago

What is mechanics? Give name of its two sub branch?

Physics

1 answer:

kap26 [50]3 years ago

3 0

Answer:

Mechanics is the branch of physics which deals with the motion of objects its causes and effects.

Sub branches

kinematics(deals with motion of objects without studying the cause of its motion)

dynamic(deals with the motion and cause of motion of objects)

Explanation:

You might be interested in

Determine the velocity that a car should have while traveling around a frictionless curve of radius 100m and that is banked 20 d

alex41 [277]

Answer:

$v=18.89\frac{m}{s}$

Explanation:

From the free-body diagram for the car, we have that the normal force has a vertical component and a horizontal component, and this component act as the centripetal force on the car:

$\sum F_x:Nsin(20^\circ)=ma_c(1)\\\sum F_y:Ncos(20^\circ)=mg(2)$

Solving N from (2) and replacing in (1):

$N=\frac{mg}{cos(20^\circ)}\\(\frac{mg}{cos(20^\circ)})sin(20^\circ)=ma_c\\gtan(20^\circ)=a_c$

The centripetal acceleration is given by:

$a_c=\frac{v^2}{r}$

Replacing and solving for v:

$gtan(20^\circ)=\frac{v^2}{r}\\v=\sqrt{grtan(20^\circ)}\\v=\sqrt{9.8\frac{m}{s^2}(100m)tan(20^\circ)}\\v=18.89\frac{m}{s}$

4 0

3 years ago

The drawing below shows two different types of pulley systems designed to lift a weight. In pulley system A, the end of the rope

nadya68 [22]

The answer would be in the chart or graph A is 1 B is 2

4 0

3 years ago

Read 2 more answers

If the mean velocity adjacent to the top of a wing of 1.8 m chord is 40 m/s and that adjacent to the bottom of the wing is 31 m/

Cloud [144]

Answer:

lift per meter of span = 702 N/m

Explanation:

See attached pictures.

7 0

3 years ago

What is the name of first magnet

omeli [17]

Answer:

$magnetite$

$hope \: helps...$

3 0

2 years ago

On a hot summer day, you and your friends decide to have a picnic at the park. To keep your food fresh you pack your lunch in a

g100num [7]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The Fruit juice should be put in the cooler, because it has the greatest heat capacity and will therefore, absorb the most heat for each degree it increases in temperature.

Explanation:

in order to understand the answer above we need to know what specific heat capacity is

Specific heat capacity can be defined as the amount of heat required to raise the temperature of a unit mass of a substance by one degree

Looking at the specific heat of each substance suggested we see that the fruit juice has a higher specific heat capacity than others this is because it contains a higher amount of water , generally liquid states of substances have a higher specific heat capacity than other states. The specific heat capacity of fruit juice being the highest among the suggested substances means that it can absorb more heat for each degree temperature of refrigerator.

8 0

3 years ago