Mechanics

Volume of a gas at STP (standard temperature and pressure) refers to the volume that a gas occupies when measured at a temperature of 0 degrees Celsius and a pressure of 1 atmosphere. This volume is typically given in liters or cubic meters.

Dimensional analysis allows you to convert between non-alike units of measure. Set up your given measurements as a proportion, and solve for the location that is standing in for the missing value.

The speed of the object would be 3 meters per second (45 meters ÷ 15 seconds).

Destructive interference causes the crest of a wave to decrease or cancel out. This occurs when the crest of one wave aligns with the trough of another wave, resulting in a reduction or cancellation of the overall amplitude.

2 Newtons to the North

7-5=2

Simple math =)

If the sum of all the forces acting on a moving object is zero, the object will continue to move at a constant velocity in the same direction. This is described by Newton's First Law of Motion, which states that an object will remain in its state of motion unless acted upon by an external force.

If the net forces on an object are balanced, the object will remain at rest or continue to move at a constant velocity. You can determine if forces are balanced by calculating the sum of the forces in each direction (e.g., horizontal and vertical) and comparing them. If the sum of the forces in each direction is zero, the forces are balanced.

The net downward force on an object is the total force acting on the object in the downward direction after considering all forces, such as gravity and any applied forces, acting on the object. It is calculated by summing up all the individual forces acting downwards on the object.

Forces are vector quantities. Draw a diagram with the forces on it in the correct direction. If both forces are acting in the same direction, ie South then add them.

12 N South. (Points of the compass take a capital /uppercase letter)

If the opposing forces are pulling exactly opposite of each other, then take the difference of the magnitudes of the two forces (subtract the smaller value from the larger value), and the direction vector of the resultant force is in the same direction as the larger force.

Both balanced force and net force refer to the overall force acting on an object. Balanced force occurs when the total force is equal in magnitude and opposite in direction, resulting in no change in an object's motion. Net force is the overall force that remains after all forces acting on an object are combined, determining its acceleration or deceleration.

A sewing needle is typically made of metal, such as stainless steel or nickel-plated steel, to provide durability and strength for sewing various fabrics. Some specialty needles may have coatings or finishes to help reduce friction and prevent rust.

Yes. Consider an object with no torques acting on it (therefore the sum of the torques is obviously zero) but with a force directed through its center of mass.

How about a freely spinning wheel on a shaft? Would have to be in a vacuum.

Ok wait, the answer is yes. Consider a horizontal beam attached at one end that is 6 ft long. If a force (x) is applied at the end of it in the downward direction and another force is applied that is twice as powerful (2x) in the upward direction 3 ft from the attached end the net torque is zero but the net force is x in the upward direction.

Volume is a scalar quantity because it only has magnitude and no direction associated with it. It is simply a measure of the amount of space occupied by an object and does not have a specific direction in which it acts.

You add them together. If there is no other force in the opposite direction it is also recognized as zero.

No, work and energy are related but not always equal. Work is a measure of the transfer of energy from one system to another, while energy is the ability to do work. In certain situations, such as when energy is transformed into different forms, work and energy may not be equal.

Strain is a dimensionless quantity that represents the deformation of an object relative to its original size. It is calculated as the change in length divided by the original length, making it unitless. This is because strain is a ratio of two lengths, and as such, it does not require a unit to quantify its value.

The energy of the electron in electron volts can be calculated by using the formula E (in electron volts) = V (volts) * e, where "e" is the elementary charge of an electron (approximately 1.6 x 10^-19 coulombs). Plugging in the values, E = 9000 V * 1.6 x 10^-19 C ≈ 1.44 x 10^-15 electron volts.

The many lines in a grating allow it to diffract light at different angles, enabling it to separate different wavelengths of light. This makes gratings useful in spectroscopy applications where the components of light need to be analyzed. More lines increase the resolution of the grating.

This is not the answer, but here is the question:

Oil is flowing with a speed of 1.12 m/s through a pipeline with a radius of 0.318 m How many gallons of oil (1 gal equals 3.79 10-3 m3) flow in one day?

Answer:

volume flow= sxAxday= 1.12x3.14x.3182x24x3600=30742.26613 m3/day

Gallons = 3042.26613/3.79E-3=8.111415 Million Gallons per day.

In electronics, a bus refers to a communication pathway that allows different components within a system to exchange data and information. Buses can transfer data, address information, control signals, and power between various devices such as processors, memory modules, and peripherals. A bus typically consists of multiple parallel conductors or connections that enable efficient and organized communication between components.

Wood, or any other material, could be used to introduce static friction to a system. The choice of material(s) depends on how much static friction the system requires. Each material has its unique coefficient of friction.

In order for water to freeze, the molecules must align themselves in an orderly fashion. When there are impurities, such as salt (but any impurity will do), they prevent the water from reaching this ordered state as easily. This requires the water to be colder before it freezes.

The salt is an impurity which when added to the ice, causes the melting point to be lowered. so if the temperature is 20 degree C, and you add salt to the ice, the melting will be lowered. It will melt faster than the one without the salt.