I know what you are going to say, “google it”. But according to google, solar sails work by harnessing the light. each particle of light has momentum, and it uses these to accelerate. but i thought that momentum was equal to mass times velocity, and according to the laws of physics and einstein’s law of relativity, photons have no mass? therefore their momentum is 0 because 0 times the speed of light is 0? i am confused, am i missing something?

where the distances between any remnants of elementary particles or photons will be infinite?

If your car is stuck in the mud and you don’t have a winch to pull it out, you can use a piece of rope and a tree to do the trick. First, you tie one end of the rope to your car and the other to a tree, then pull as hard as you can on the middle of the rope, as shown in the figure. This technique applies a force to the car much larger than the force that you can apply directly. To see why the car experiences such a large force, look at the forces acting on the center point of the rope, as shown in the figure. The sum of the forces is zero, thus the tension is much greater than the force you apply. It is this tension force that acts on the car and, with luck, pulls it free. A. The sum of the three forces acting on the center point of the rope is assumed to be zero because The sum of the three forces acting on the center point of the rope is assumed to be zero because This point has a very small mass. Tension forces in a rope always cancel. This point is not accelerating. The angle of deflection is very small. B. When you are pulling on the rope as shown, what is the approximate direction of the tension force on the tree? North west east or south C. Assume that you are pulling on the rope but the car is not moving. What is the approximate direction of the force of the mud on the car? Assume that you are pulling on the rope but the car is not moving. What is the approximate direction of the force of the mud on the car? North South East or West

At some point during their orbit, the location of the Earth and Moon relative to the Sun will be as shown in the figure below. What are the magnitude, in N, and direction of the force experienced by the Moon, in degrees below the Sun-Moon line, due to the Sun and the Earth? (The mass of the Moon is 7.35 1022 kg, the Earth has a mass 5.97 1024 kg, and the Sun has a mass 2.00 1030 kg. In the figure, the distance from the Moon to the Earth is 3.84 108 m and the distance from the Moon to the Sun is 1.50 1011 m.) What is the magnitude? (N) What is the direction? degrees below the sun-moon line please help?

Best answer: (kg/m³) (m/s)²
kg / m / s²
(kg m / s²) / m²
N / m²
Pa

P + ρv²/2 = constant
v = Q/A
P + ρ(Q/A)²/2 = constant
P + 1/2 ρ Q²/A² = constant

P is a maximum when 1/2 ρ Q²/A² is a minimum, which is when A is a maximum.

Best answer: A Cepheid variable is a type of star that pulsates radially, varying in both temperature and diameter to produce brightness changes with a well-defined stable period and amplitude.

I thought that the angle of incidence and refraction were the same through a glass boundary, but the results of an experiment that the questions given me is that the angle of refraction is just over half of the angle of incidence. I don’t understand how this could be. Could someone help me please thanks

Best answer: My thoughts are similar to philomel's

Just standing part-submerged in hot water (or cold after containing hot) can cause extreme stress.

You can "cut" a bottle or glass by part filling it with cold water, wrapping a piece of string around it at the same level that's wet with alcohol, then lighting that to cause a large temperature difference in a small distance.
When it works right, the all you get is a "click" after a few seconds and the top part separates very cleanly.

A moderate temperature difference plus a minor impact to assist could cause the same thing.

Best answer: They enforce speed limits on flying saucers.

Best answer: Life sentence, just inside the event horizon of a black hole.

Best answer: Dust off the object, off the ground, also some can be from the gigantic something breaking.
The cloud itself is generated by a large mass suddenly coming to rest. The energy has to transfer and can't be destroyed. As such, it goes into sound and shockwave. disturbing the dust, and sending it away from the epicenter

How about if you travel faster than light using the Alcubierre Warp Drive?? What would be its temporal effect??

An automobile with tires that have a radius of 0.260 m travels 88000 km before wearing them out. How many revolutions do the tires make, neglecting any backing up and any change in radius due to wear?

Best answer: It was part of that "whatever is not this universe" stuff. I don't think it is a correct model to think of it as existing as a ball any"where", because it likely only concentrated or segregated from a bulk "stuff" at the instant of universe-initiation. That concentration or segregation is what impelled the universe to form. the problem is that we don't really have a good idea of what is "Not this universe". We do have a decent idea that this universe has opposite counterparts that are not here, or this universe would not exist. antimatter and antienergy, sort of.