Explanation

Explanation

Explanation

• Pressure = Force / Area
• 4000 N/m2 = Force / 3 m2
• Force = Pressure x Area
• Force = 4000 N/m2 x 3 m2
• Force = 12000 N

Since weight is equal to force, the weight of the truck is 12000 N.

Explanation

Pneumatic systems are used in:

• Spray guns (to atomize and spray paint or other materials)
• Pumps (to compress and transfer fluids)
• Vacuum cleaners (to create suction and lift dust and debris)
• Dental drill or dentistry tools (to power drills, sanders, and other instruments)

Explanation

Explanation

The standard atmospheric pressure at sea level is 1013.25 millibars (mb) or hectopascals (hPa).

This is also equivalent to about 14.7 pounds per square inch.

The scientific unit of pressure is the Pascal (Pa).

It is equal to 0.01 millibar or 0.00001 bar.

Explanation

• The Earth is tilted at an angle of 23.5 degrees.
• This tilt is responsible for the changing of the seasons and the difference in the amount of sunlight reaching a given point on the surface during the course of a year.
• The tilt varies between 22.1 and 24.5 degrees in a cycle that averages about 40,000 years.

Explanation

Explanation

We are given:
A wire with resistance R = 6 Ω
It is cut into two equal parts
These two parts are then connected in parallel

Step 1:

Resistance of each half
When a wire is cut into two equal parts, the resistance of each half becomes half:
Rhalf​=6/2​=3Ω

Step 2:

Two 3 Ω resistors in parallel
Use the formula for two resistors in parallel:
Req​1​=1/3​+1/3​=2/3​

Req​=3/2​=1.5Ω

Explanation

The "slinky approximation" refers to a model

Where a spring (like a slinky) is considered to be composed of a series of small masses connected by massless springs

And its stretched length is significantly larger than its original unstretched length.

This approximation is useful for studying the dynamics of slinkies, particularly when the stretches are large.