The materials such as high-quality furnace filters, tightly woven cotton fabric, electrostatic cloth, and activated carbon are everyday options that provide effective filtration of microscopic particles.
There are several everyday materials that can effectively filter microscopic particles.
One commonly used material is high-quality furnace filters, which are designed to capture small particles and allergens. These filters consist of dense fibers that create a barrier, preventing microscopic particles from passing through.
Another effective material is tightly woven cotton fabric, such as quilting cotton or flannel. The tight weave of these fabrics can trap small particles, making them suitable for homemade face masks or air filtration systems.
Electrostatic cloth, like microfiber towels, also has excellent filtering capabilities. The fibers in these cloths carry an electric charge that attracts and captures particles, including microscopic ones.
Activated carbon is another material used for filtering microscopic particles. It works by adsorbing particles onto its surface through a process called adsorption. Activated carbon is commonly found in air purifiers, water filters, and respirators.
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Which of the following statements is not true about proper tire care?
Answer:
The answer is 'Tire tread depth can only be checked by a properly trained tire expert.'
Explanation:
Energy problem formulas
Potential Energy = mgh
v = velocity or speed
Kinetic energy = mv²
9 = 9.8 m/s²
m = mass in kg
(Precision of 1)
h = height in meters
You serve a volleyball with a mass of 3.1 kg. The ball leaves your hand
with a speed of 20 m/s.
a) Calculate Kinetic Energy
(Precision of 1)
b) How much work is being done to the system to create this kinetic
energy?
I need this asap
a. The kinetic energy is 620 J
b. The amount of work done is equal to the kinetic energy. In this case, the work done is 620 J.
How to calculate the valuea. The formula for kinetic energy is:
KE = 1/2mv²
where:
KE is the kinetic energy in joules (J)
m is the mass in kilograms (kg)
v is the velocity in meters per second (m/s)
In this case, we have:
m = 3.1 kg
v = 20 m/s
So, the kinetic energy is:
KE = 1/2(3.1 kg)(20 m/s)²
= 620 J
b) How much work is being done to the system to create this kinetic energy?
Work is done to the system to create kinetic energy. The amount of work done is equal to the kinetic energy. In this case, the work done is 620 J.
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Question 5 (5 points)
A Vex motor has a has a voltage of 9 volts running through it, and a
current of 15 mA. What is the power?
(Precision of 0.000)
The power of the Vex motor is 0.135 watts.
How to solveThe power of the Vex motor can be calculated using the formula:
Power (P) = Voltage (V) * Current (I)
Substituting the given values:
P = 9 volts * 15 mA
To simplify the calculation, we convert milliamperes (mA) to amperes (A):
P = 9 volts * 0.015 amperes
P = 0.135 watts
Therefore, the power of the Vex motor is 0.135 watts.
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