Enable contrast version

# Tutor profile: Hamza M.

Inactive
Hamza M.
Tutor.
Tutor Satisfaction Guarantee

## Questions

### Subject:Pre-Calculus

TutorMe
Question:

There are two students, Student A writes 2 essays each hour. Student B writes 3 essays each hour. If they worked together without interfering each other, how long does it take to finish 1 essay?

Inactive
Hamza M.

Use the formula W=(rA+rB)t where rA and rB are the rates of doing work (essays per hour) for students A and B respectively. rA=2 essays per hour, rB=3 essays per hour, and W=1 essay. Substitute in formula and solve for t. t=1/5 hours.

### Subject:Calculus

TutorMe
Question:

If r = cos (xy) + 3xy – 2x2 – 3x – 2y, find ∂F/∂x and ∂F/∂y.

Inactive
Hamza M.

r=cos(xy)+3xy−2x2−3x−2y The partial derivative of r with respect to x is ∂F∂x=−ysin(xy)+3y−4x−3 also The partial derivative of r with respect to y is ∂F∂y=−xsin(xy)+3x−2

### Subject:Physics

TutorMe
Question:

Q1:in the reaction : (At#: 95, M#241) Am =(At#: 953 M#237) Np+X What is X ? Q2: A spaceship of alien sports enthusiasts passes by the Earth at a speed of 0.8c, watching the final minute of a basketball game as they zoom by. Though the clock on Earth measures a minute left of play, how long do the aliens think the game lasts?

Inactive
Hamza M.

A1: Both atomic number and mass number are conserved in nuclear reactions. Since the mass number is 241 and the atomic number is 95 on the left side of the equation, the mass number must add up to 241 and the atomic number to 95 on the right side. Since the mass number of the Np atom is 237 and its atomic number is 93, the X atom must have a mass number of 4 and an atomic number of 2, which is the case with an alpha particle. A2: Because the Earth is moving at such a high speed relative to the alien spaceship, time appears to move slower on Earth from the aliens’ vantage point. To be precise, a minute of Earth time seems to last so by using time dilation formula : t'=100s

## Contact tutor

Send a message explaining your
needs and hamza will reply soon.
Contact hamza