Recent content by MiniOreo1998

Homework Statement For each function, find an expression for the velocity and the value of the displacement and velocity at t=5. Displacement is in metres and time is in seconds. Homework Equations A)[/B] s(t) = 3t + 7 B) s(t) = t3 - 2t2 + 4t - 1The Attempt at a Solution A) [/B]s(t) = 3t...

Conservation of energy.

The problem is word for word what I've given here. (I wish more info were made available, it seems as if this can be interpreted in more than one way)

Homework Statement Keys with a combined mass of 0.100 kg are attached to a 0.25 m long string and swung in a circle in the vertical plane. A) What is the slowest speed the keys can swing and still maintain a circular path? B) What is the tension in the string at the bottom of the circle...

Homework Statement A muon has a lifetime of 2.20 x 106 s when at rest, after which time it decays into other particles. A) Ignore any effects of relativity discussed in this section. If the muon was moving at 0.99 c, how far would it travel before decaying into other particles, according to...

Homework Statement An electron is fired at 4.0 x 10^6 m/s horizontally between the parallel plates, as shown, starting at the negative plate. The electron deflects downwards and strikes the bottom plate. The magnitude of the electric field between the plates is 4.0 x 10^2 N/C. The separation...

Homework Statement Charge 1 (0.15 kg) in the following diagram is hanging from a light insulating thread, as shown. Charge 2 is brought close and pulls charge 1, deflecting the string away from the vertical axis. The charges have the same magnitude, but charge 1 is negative. A) Find the...

Homework Statement To simulate gravity, a circular space station with a radius of 150 m is rotated so that astronauts standing on the inner surface move at 30 m/s. If the 75 kg astronaut stands on a bathroom scale, what reading will it give? (Assume that the scale is calibrated in Newtons)...

Wow, completely misread the question. How embarrassing.. Then F = m a, F = (30) (7.2) F = 216 N [toward Earth]

Homework Statement A 500 kg satellite experiences a gravitational force of 3000 N, while moving in a circular orbit around Earth. A) Find the radius of the orbit B) Find the speed of the satellite C) Find the period of the orbit I found this set of questions a bit trickier, although am...

Homework Statement A 12 kg meteor experiences an acceleration of 7.2 m/s2, when falling towards the Earth. A) How high above the Earths’ surface is the meteor? B) What force will a 30 kg meteor experience at the same altitude? Starting to get more comfortable with my calculations. If there...

Homework Statement The Earth has a mass of 5.98 x 1024 kg and the moon has a mass of 7.35 x 1024 kg. The distance from the centre of the Moon to the centre of the Earth is 3.84 x 108 m. A rocket with a total mass of 1200 kg is 3.0 x 108 m from the centre of the Earth and directly in between the...

I'm picturing this in my head as q1 wanting to "act" with q2 and q3 equally. Since both q2 and q3 are negative and are both equal distances from q1, I'm assuming that q1 tries to "go toward" both of them (which in this case caused the 45 degree angle to the right as the direction). Is this...

Net electric field: ε = k q1 / r2 (measured in N/C, Newtons per coulomb) ε = (9.0 x 109) (2.0 x 10-5) / (2.0)2 = 95 000 N/C

As for potential: εnet = (9.0 x 109)(3.0 x 10-5)/(2.0)2 + (9.0 x 109)(3.0 x 10-5)/(2.0)2 = 1.35 x 105 N [45 degrees to the right]