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Write a program that accepts a letter grade as input and outputs the teacher’s remarks. Use
only switch, do not use any if’s. Example: If ‘A’or ‘a’, then “Excellent job!”. If ‘F’ or ‘f’, then “You
failed. Please study more next time”.
How the economic problems can be solved during the covid-19? Which school of thought help in the best way to solve these problems.
what are the determinants of the rate of inflation? What role do macroeconomics polices play in determining inflation rate?
A mass of 20 kg is being pulled, with a rope, up a frictionless slope inclined at an angle of 30°. The rope is parallel to the slope, and the mass is traveling at a constant 5 ms-1 in a straight line.
a. Draw a free-body diagram for this situation.
b. Draw a vector triangle for the weight, dividing it into perpendicular components.
c. Calculate the component of the weight that is parallel to the slope.
d. Hence calculate the work done in pulling the mass 3 metres.
e. What is the power required?
f. How much gravitational potential energy has the mass gained when pulled 3 metres along the slope?
g. The 20 kg mass is then released from rest on another 30° slope, but this time there is a frictional force of 15 N. Find the magnitude and direction of the acceleration in this case.
The percentage of nitrogen in a fertilizer designated as 6 12 8 is
A boy has a mass of 50 kg. He jumps at a speed of 2.5 m/s into a stationary boat which has a mass of 70 kg. Please calculate their speed (ignore friction).
Pumped-storage hydroelectricity allows energy to be stored to prepare for periods of high demand. Let a high-level reservoir be 500 m above a low-level reservoir. What is the useful power output if the water from the high-level reservoir flows at a rate of 100 kg per minute and the turbine is 85% efficient?
The device parameters for an n-Channel JFET are: Maximum current iDSS = 10mA. Pinch off voltage, Vp = - 4V Calculate the drain current for (a) VGS = 0 (b) VGS - 1.0v (c) VGS = - 4V.
1. A truck moving at 35 m/s collide with a car moving at 50 m/s. After collision, both truck and car move together at the same speed. Mass of the truck is 1,500 kg and the mass of the car is 700 kg. What is the velocity of both truck and car after collision?
Four point charges are equally separated by 1.00 m in air. If q1 = 3.0 nC, q2 = -4.0 nC, q3 = 2.0 nC, and q4 = -5.0 nC, what is the electric field at a point halfway between q2 and q3? show the equation, solution and complete answer.
#339914 on Dec 2023