Physics

Pretty simple question about Snell's law

The critical angle for light passing from glycerineto air is 42.9 degrees. What is the index of refraction of glycerine? If you could show your working out id really appreciate it-Well Snells Law is

Magnitude and direction

John drives 16 km directly west from Orion to Chester at a speed of 98 km/h, then directly south for 8.0 km to Seiling at a speed of 85 km/h, then finally 34 km southeast to Oakwood at a speed of 107

At what time of this position function does the particle reach it's maximum positive x position

x = 3t^2-2t^3 x is in meters and t is in seconds thanks-this will occur when dx/dt =0 dx/dt = 6t - 6t^2 = 6t(1-t)=0 this occurs when t=0 or t=1 do the second derivative test: d^2x/dt^2 = 6-12t

I dont understand Physical science

Which of the following shows NO acceleration? A. a car moving at a constant speed of 55 miles per hour B. a truck slowing down as it approaches a red light C. a motorcycle changing speed from 50 mile

I don't get this physics question.

A object moving 2 m/s experiences an acceleration of 3 m/s ^2 (Squared) for 8 seconds. how far did it move in that time? Ive gone through multiple kinematic equations but I cant seem to get my answer

Physics question about velocity and distance

Hi! I have homework and although I understand most of it, I dont understand how to solve this question: The velocity of the transverse waves produced by an earthquake is 5.11 km/s, while that of the l

I need help with Physical science! Please.

If an object is moving at a velocity of 5 m/s and has been moving for 30 seconds, how far has it traveled? A. 150 m B. 6 m C. 35 m D. 25 m-answer is 150 m

Is there a formula for these kinds of questions...

im being asked how many grams of Sodium hydroxide should be added to a 240Ml of water to obtain a solution of 0.26 M? How would i solve that-240 mL of Solution x (0.26 mol NaOH/1000 mL solution) x (4

Theory of relativity

I know its a theory but is it really true?-The theory of relativity is 100% true and it is also proved. The theory of general relativity was proved by taking photographs of the sky during solar eclips

Vector Problem(Physics)

You are given a vector in the xy plane that has a magnitude of 83.0 units and a y component of -63.0 units. Assuming the x component is known to be positive, specify the vector V which, if you add it

What is the formula for projectile motion in physics

When given a angle and an initial velocity, how would I find the position of an object lauched?-The position at what time? There is no single formula. You have to work out thevertical position ( us

Relatively simple physics problem

A wrecking ball is hanging at rest from a crane when suddenly the cable breaks. The time it takes for the ball to fall halfway to the ground is 4.61 s. Find the time it takes for the ball to fall from

A ship increases its speed from 20 m/s to 30 m/s in 200 m.

What is the acceleration and how much time is needed to travel 200 m? (M = meters) Thanks for any help!-Accelaration is 10/8 m/s^2 Time is 8 Seconds How: V = Vi + A*T => 30 = 20 + A*T => A * T = 10

What is the Acceleration m/s^2

A tennis ball with a speed of 10.0 m/s is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 7.0 m/s. If the ball is in contact with

A toy rocket, launched from the ground, rises vertically with an acceleration of 13 m/s2 for 7.6 s until its m

This is actually simple. Let me explain for your better comprehension about this problem. The basic idea behind is that 13 m/s^2 shows that in 1 second, the toys speed changes by 13 m/s so, in 7.6 s