# Posts by Aestas

Total # Posts: 14

**Statistics**

For a population with a mean of (mew) = 50 and a standard deviation of 10, how much error, on average, would you expect between the sample mean (M) and the poulation mean for: a) a sample of n=4 scores b) a sample of n=16 scores c) a sample of n=25 scores Are the sample mean (...

**music**

So, in G/B, B is the descending bass line under the G chord. The G chord I normally play is 300023. So, is the last string/note played whatever is closest to string 6 or whatever is closest to string 1? Is this an understood rule? I mean how do you decide how to play the ...

**Physics**

Two 75.0-kg hockey players skating at 5.25 m/s collide and stick together. If the angle between their initial directions was 140 degrees, what is their speed after the collision? (Let the motion of player 1 be in the positive x-direction and the motion of player 2 be at an ...

**Physics**

When a golf club strikes a golf ball, the club is in contact with the ball for about .0016 s. The 45-g ball acquires a speed of 71 m/s. a) What is the magnitude of the impulse applied to the ball? b) Estimate the magnitude of the average force exerted by the club on the ball ...

**Physics 2414**

A 1000 kg car can accelerate from rest to v = 85 km/hr in a time t = 7.4s. If, instead the power of the car is smaller by a factor of .4 and the car accelerates for the same amount of time, by what factor will the maximum speed decrease?

**Physics 2414**

The problem I'm having (in general with Physics) is knowing which equation to use. I used the air resistance force = mg, and the answer came out wrong. So I just don't know what I'm doing wrong.

**Physics 2414**

The problem I'm having (in general with Physics) is knowing which equation to use. I used the air resistance force = mg, and the answer came out wrong. So I just don't know what I'm doing wrong.

**Physics 2414**

An airplane pilot falls 355 m after jumping from an aircraft without his parachute opening. Fortunately, he lands in a snowbank, creating a crater 1.5 m deep, and survives with only minor injuries. Assuming the pilot's mass is 77 kg and his terminal (maximum) velocity ...

**Music**

What does the G/B chord mean, on guitar? Why is it called G/B?

**Chemistry 2**

The rate constant is 9.50x10^-5 L/mol*s at 195 degrees Celsius and 1.30x10^-3 L/mol*s at 258 degrees Celsius. What is the activation energy of the reaction? I'm not sure what I'm doing wrong here. I found the natural log (ln) of: 9.50x10^-5 = -9.26 1.30x10^-3 = -6.65 ...

**Causal Argument Paper**

Hello, I am needing help formulating a question for my English class. We are needing to write an ethical/causal argument. I want to relate it to either animal testing or animal hunting. Is this a decent one? "Is it ethical to continue animal experimentation?" "...

**Math**

409600

**Physics**

Each of the following statements has 1, 2, or 3 conceptual flaws. Explain what is wrong with each sentence (I just need help finding a website for this) 1. A rocket moves through space because the exhaust from the rocket's engine pushes against the atmosphere. 2. If an ...

**Psychology**

ARe there any different effects of PTSD on men, women, and children? If so, what?