Physics Answers

A Carnot engine operating between 527C and 27 C produces 600KW of work. Determine,

(a) Qa, KW; (b) Qr, KW; (c) ΔS during heat rejection, KW/K and (d) thermal efficiency of the cycle.

You're travelling in a straight line. With a constant acceleration of 0.50 \text{ m}\cdot{s}^{-2}

0.50 m⋅s−2

, how long does it take to accelerate from 13 \text{ m}\cdot \text{s}^{-1}

13 m⋅s−1

to 18 \text{ m}\cdot \text{s}^{-1}

18 m⋅s−1

, and how far do you travel while doing so?

Time = _____ seconds

Distance = ______ metres.

A triangular array of resistors is shown in the figure on the right. What current will this array draw from a 35,0V battery having negligible internal resistance if we connect it across

a.) ab; b.) bc and

c.) ac?

Can i know if there is any suggestion of new electromagnetic waves application to be used in this pandemic era

A 12-V battery, a 12-ohm resistor and a 4-ohm resistor are connected as

shown. The current in the 12-ohm resistor is ____ that in the 4-ohm resistor.

A battery with a terminal voltage of 12V is connected to a circuit consisting 

of four 10 Ω and one 5 Ω resistor all in series. Assume the battery has 

negligible internal resistance. Calculate the current through each resistor.

An RC circuit have a 9 V source and lies at a 54-seconds of time constant.

Then, find the voltage across the Capacitor after 153.6 seconds of charging.

A1.30kg nano -satelite (a cube Salt )with a side length of 100.0mmis sitting on a workshop bench on the moon.

The acceleration due to gravity is 1.6 ms

calculate the pressure ?

A bullet is fired vertically upward (don't) with a muzzle velocity of 671.ft/s.

a) when does if reach max altitude?

b) what is that max altitude (above the gun)?

c) when does it return to hit the gun (or stupid sportsman)?

Compute the horizontal range, on level ground, for a projectile with initial speed 35.0m/s and initial inclination 75.0⁰ from the horizontal.