A 3.20-kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.460. Determine the kinetic frictional force that acts on the box for each of the following cases. (a) The elevator is stationary. ___________ N (b)...
angle 48 as shown in the figure. The inner surfaces of the wedge are frictionless. Determine the force exerted by the wedge on the sphere at point B. The acceleration of gravity is 9.8 m/s2 . Answer in units of N.
The drawing shows three particles far away from any other objects and located on a straight line. The masses of these particles are mA = 363 kg, mB = 517 kg, and mC = 154 kg. Find the magnitude and direction of the net gravitational force acting on each of the three particles (let the direction...
Three hollow metal rods, of equal length and negligible mass, are connected by pins to form an triangular frame as shown. The frame stands upright, and a weight is hung from the vertex of the triangle frame. What is the tension in the horizontal rod which forms the base of the triangular...
A suitcase (mass m = 15 kg) is resting on the floor of an elevator. The part of the suitcase in contact with the floor measures 0.50 m 0.15 m. The elevator is moving upward with an acceleration of magnitude 1.3 m/s2. What pressure (in excess of atmospheric pressure) is applied to the floor...
At standard gravitational acceleration, if a bullet is fired at 403 m/s, at an angle of 22 degrees, on a flat plane where throughout the elevation is exactly sea level. The bullet s rate of deceleration from 403 m/s, is 3 m/s/s/s, terminally reaching 15m/s. Assume air resistance has no effect...
1. calculate the number of moles of mg in 2.40g? 2. calculate the mass of carbon produced? 3. when mg is burn white and black solid formed,identify the two solid? 4. chemical test for prensence of copper(ll)ions?
On the attached assignment, I need to know how to do number 11.
In the figure, R = 18.0 , C = 6.20 F, and L = 80.0 mH. The generator provides a sinusoidal voltage of 125 V (rms) and frequency f = 530 Hz . Calculate the rms current.
Compute the path integral for a free particle (H=P^2/2m) Integral(dq1*dq2*...*dqN *dp0*dp1*...dpN exp(i*p0(q1-q'))*exp(i*p1(q2-q1))*...*exp(i*pN(qN-q(N-1)))) This is Srednicki's Quantum Field Theory problem 6.1b
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1. Can you show me step by step how to solve this problem?:
- The Earth’s rate of rotation is constantly decreasing, causing the day to increase in duration. In the year 2000 the Earth takes about 0.548 s longer to complete 365 revolutions than it did in the year 1900.
- (a) What is the average angular acceleration of the Earth?
- (b) If this average acceleration remains constant, in what year will the Earths rotation come to rest?
2. I do not understand this Ideal Gas Law and Kinetic Theory question. Can you help me set it up?
- A spherical balloon is made from a material whose mass is 3.00-kg. The thickness of the material is negligible compared to the 1.5-m radius of the balloon. The balloon is filled with helium (He) at a temperature of 305-degrees K and just floats in the air, neither rising nor falling. The density of the surrounding air is 1.19-kg/m^3. Find the absolute pressure of the helium gas