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Physics

02/22/24

help help help please

3. Consider a bead starting at rest at Point A. It slides along the frictionless wire to Point J. The dotted lines are horizontal. For each of the following, circle the symbol that makes each... more

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Physics

02/22/24

Computing average speed: swimmer problem

A swimmer jumps into a river that is flowing with a constant speed of v= 3 m/s. Theswimmer, starting at some point swims downstream a distance D and back upstream thesame distance to the same point... more

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Physics

02/21/24

Electric Field on an Angle

A uniform electric field exists throughout a region of space that contains all five points (A through E) shown. Points A through D are on a single left-right line. E is on a line at an... more

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Physics

02/21/24

Electric Field Lines on a Dipole

The next two questions refer to the following situation: Two charges of equal magnitude but opposite polarity (one +q and one –q) are arranged as shown.What is the most accurate depiction of the... more

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Physics

02/21/24

Electric Field From Multiple Charges

The next two questions refer to the following situation: You are given four charges: q1 = –Q, q2 = –4Q, q4 = +9Q, q5 = +3Q, and a fifth unknown charge q3. The net E-field due to q1, q3, q4, and q5... more

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Physics

02/21/24

Physics Help Finding Distance with velocity

You are standing at the top of a cliff that has a stairstep configuration. There is a vertical drop of 5 m at your feet, then a horizontal shelf of 9 m, then another drop of 5 m to the bottom of... more

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Physics

02/21/24

Energy Question

An "energy bar" contains 18 g of carbohydrates. If the energy bar was his only fuel, how far could a 68 kg person walk at 5.0 km/h?

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Physics

02/20/24

Physics Question

Melvin pulls a sled across level snow with a force of 59 N along a rope that is 23 degrees above the horizontal. If the sled moved a distance of 19 m, how much work did Melvin do? Answer in units... more

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Physics Math

02/20/24

dP/dt questions.

I know dP/dt is the instantaneous change in momentum.How do you calculate it? Why do you need it?

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Physics

02/19/24

A car's constant velocity is 28 m/s, a moose is 75 m ahead. The brakes are applied, the car accelerates at – 6.4 m/s . What was the maximum reaction time the driver had to apply the brakes?

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Physics

02/19/24

A sign is hanging from three ropes as shown in the figure. The tension in the lefthand rope, T1, is 320.51 N. Angle θ1=61.9°, and angle θ2=37.1°.

sign.pdfA sign is hanging from three ropes as shown in the figure. The tension in the lefthand rope, T1, is 320.51 N. Angle θ1=61.9°, and angle θ2=37.1°.What is the tension, T2, in the righthand... more

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Physics

02/16/24

Does the vibrations of molecules and atoms microscopically in a solid cause the solid object as a whole to vibrate?

We are told that atoms and molecules vibrate microscopically in a solid. Does that mean the solid object as a whole vibrates, for instance, a nightstand or table?

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Physics Chemical Engineering Mechanical Engineering

02/16/24

For a 2-component system existing in vapor liquid equilibrium (VLE) at constant pressure= 1 atm, which of the following statements can be correct?

For a 2-component system existing in vapor liquid equilibrium (VLE) at constant pressure= 1 atm, which of the following statements can be correct?a.) T and composition can be independently... more

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Physics

02/16/24

physics Problems. Optics and such

The wavelength of an EM wave is 650 nm when the wave is in a medium with index of refraction of 1.51. What is the frequency of the EM wave?A light with wavelength 190 nm is incident on a double... more

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Physics Math

02/15/24

If the pressure in the pipe is 8830 N/m2 and in the constricted section is 6622.5 N/m2 , what is the rate at which oil is flowing? Answer in units of m^3/s.

A horizontal pipe of diameter 0.769 m has a smooth constriction to a section of diameter 0.4614 m . The density of oil flowing in the pipe is 821 kg/m ^3 . If the pressure in the pipe is 8830 N/m2... more

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Physics Math

02/15/24

Please find the gauge pressure of the water flowing through the smaller pipe Atmospheric pressure is 1.013 × 10^5 Pa .

Water flows at speed of 5.4 m/s through a horizontal pipe of diameter 3.2 cm . Supposea thick pipe is connected to a thinner pipe. In the first pipe the gauge pressure P1 of thewater is 1.7 atm .... more

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Physics Math Physical Science Mechanical Engineering

02/15/24

Please help- heat conduction and Newton's law of cooling

Criterion: The heat transfer coefficient is the same for the freezer and the refrigerator.Two bowls of the same size are filled with room-temperature coffee and then placed one in the freezer and... more

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Physics

02/15/24

physics towbar question

A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 23.9∘∘ with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the... more

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Physics

02/15/24

physics tension

Two blocks are connected by a massless string and are held in position by another massless string along a frictionless incline (as shown in the figure). Let M1 = 2.30 kg, M2 = 4.70 kg, and θ� =... more

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Physics

02/15/24

physics hanging sign tensions.

A sign is hanging from three ropes as shown in the figure. The tension in the lefthand rope, T1, is 320.51 N. Angle θ1=61.9°, and angle θ2=37.1°.What is the tension, T2, in the righthand rope?What... more

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Physics

02/15/24

Unsure how to set this up because of the E

A supertanker (mass = 1.60E+8 kg) is moving with a constant velocity. Its engines generate a forward thrust of 7.54E+5 N. Determine the magnitude of the resistive force exerted on the tanker by the... more

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Physics

02/14/24

Does a solid, like a night stand, vibrate macroscopically because the atoms and molecules that make up the solid vibrate?

We know particles that make up solids vibrate, but do the solids vibrate themselves because of that? Like a structure or object like a night stand, does that night stand vibrate macroscopically... more

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Physics

02/12/24

Does a solid, like a night stand, vibrate macroscopically because the atoms and molecules that make up the solid vibrate?

We know particles that make up solids vibrate, but do the solids vibrate themselves because of that? Like a structure or object like a night stand, does that night stand vibrate macroscopically... more

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Physics

02/11/24

Charges (physics)

A student tests three objects, A, B, and C, for electrical interactions. Object A is repelled by a glass rod that has been rubbed with silk. Object B attracts small bits of paper. Object C attracts... more

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Physics

02/11/24

Magnitude of the normal force

A 32.7 kg crate rests on a horizontal floor, and a 77.3 kg person is standing on the crate. Determine the magnitude of the normal force that the floor exerts on the crate.

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help help help please

Computing average speed: swimmer problem

Electric Field on an Angle

Electric Field Lines on a Dipole

Electric Field From Multiple Charges

Physics Help Finding Distance with velocity

Energy Question

Physics Question

dP/dt questions.

A car's constant velocity is 28 m/s, a moose is 75 m ahead. The brakes are applied, the car accelerates at – 6.4 m/s . What was the maximum reaction time the driver had to apply the brakes?

A sign is hanging from three ropes as shown in the figure. The tension in the lefthand rope, T1, is 320.51 N. Angle θ1=61.9°, and angle θ2=37.1°.

Does the vibrations of molecules and atoms microscopically in a solid cause the solid object as a whole to vibrate?

For a 2-component system existing in vapor liquid equilibrium (VLE) at constant pressure= 1 atm, which of the following statements can be correct?

physics Problems. Optics and such

If the pressure in the pipe is 8830 N/m2 and in the constricted section is 6622.5 N/m2 , what is the rate at which oil is flowing? Answer in units of m^3/s.

Please find the gauge pressure of the water flowing through the smaller pipe Atmospheric pressure is 1.013 × 10^5 Pa .

Please help- heat conduction and Newton's law of cooling

physics towbar question

physics tension

physics hanging sign tensions.

Unsure how to set this up because of the E

Does a solid, like a night stand, vibrate macroscopically because the atoms and molecules that make up the solid vibrate?

Does a solid, like a night stand, vibrate macroscopically because the atoms and molecules that make up the solid vibrate?

Charges (physics)

Magnitude of the normal force

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