An electron has an initial velocity v⃗ 0=(7.0×10^4m/s)j^. it enters a region where e^=(1.7i^+8.7j^)×10^4n/c. part adetermine the vector acceleration of the electron as a function of time. express your answer using two significant figures. enter the x and y components of the acceleration separated by a comma. part bat what angle θ is it moving (relative to its initial direction) at t = 2.0 ns ? express your answer using two significant figures.

Astring that is fixed at both ends has a length of 1.05 m. when the string vibrates at a frequency of 91.0 hz, a standing wave with five loops is formed. (a) what is the wavelength of the waves that travel on the string? (b) what is the speed of the waves? (c) what is the fundamental frequency of the string?

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

Sasha has just gotten a new job in a nearby city. after comparison shopping, she found that renting a nice two-bedroom apartment would cost around $800 per month. her utilities would cost about $150 per month. sasha has enough money saved for a down payment, and she found that she can buy a three-bedroom house or condo with a mortgage payment of $1,000 per month, including taxes and homeowner's insurance. her utilities would cost about $200 per month. what is the advantage of buying the house over renting the apartment?