Search
Assignment
1. One mole of an ideal monoatomic gas goes through a cycle in a heat engine. Process z is isobaric, process x is isochoric and process y is adiabatic. Find
a. The heat absorbed or released
b. Change in internal energy
c. World one for each of the three processes and whole cycle
a car starts from rest and accelerates uniformly at 8 m per second square until it attains a maximum velocity of 80 m per second squared as it continues with this speed for 400 seconds until it is brought to rest for under 25 seconds using a vt graph find the total distance traveled
Assuming that the rest radius of earth is 6400 km and its orbital speed about the sun is 30 km/sec,
how much does earths diameter appear to be shortened to an observer on the sun, due to earth’s
orbital motion?
if the conduction current density J=5sin(wt-20z)ay +cos(wt-20z)az mA/m^2 then evaluate the volume charge density
A metal block of mass M kg is attached to a spring of negligible mass and spring constant k as shown in Fig. 2, and is free to slide on a frictionless, horizontal surface. A clay ball of mass M/4 kg is fired at the block with velocity V m/s and sticks to it. The block is initially at rest and the spring is initially uncompressed. (a) (3 marks) What is the speed of the block and ball system immediately after the impact? (b) (4 marks) Write an equation for the position of the block as a function of time after the collision, assume that at t = 0 s, the instant of the impact, it is at X = 0 m, which is the unstretched point of the spring. Determine values for the amplitude, angular frequency in terms of the given quantities. Assume that X and V are positive to the left as shown. (c) (3 marks) Calculate the time period, maximum velocity and maximum acceleration of the motion of the spring block and ball system.
An object explodes and its sound wave propagates through the sea where the temperature is 37 C. It also propagates through air with a 30°C temperature. What will be the difference in the arrival time between the two signals at a station that in 75 km away? (bulk modulus of seawater - 3x10 N/m: seawater density-1245 kg/m³; molar mass of air is .049 kg)
If you tried to smuggle gold bricks by filling your backpack, whose dimensions are 54 cm x 31 cm x 22 cm, what would its mass be?
Write the Given, Required and Solution Express your final answer
in proper significant figure.
A 4.5 kg dog stands on an 18 kg flatboat at dis-
tance D ! 6.1 m from the shore. It
walks 2.4 m along the boat toward
shore and then stops. Assuming no
friction between the boat and the wa-
ter, find how far the dog is then from
the shore.
A tube 1.20 m long is closed at one end. A stretched wire
is placed near the open end. The wire is 0.330 m long and has a
mass of 9.60 g. It is fixed at both ends and oscillates in its funda-
mental mode. By resonance, it sets the air column in the tube into
oscillation at that column’s fundamental frequency. Find (a) that
frequency and (b) the tension in the wire.
Two springs are
joined and connected to a block of
mass 0.245 kg that is set oscillating
over a frictionless floor. The springs
each have spring constant k $
6430 N/m. What is the frequency of
the oscillations?
