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A heat engine absorb 750J of heat from a hot performs 265J of work calculate the efficiency of the heat engine.
In a paper presentation, the average algebraic reasoning of Grade 8 students in a mathematics camp was observed to be 80 with lowest and highest observed value of 20 and 38.4. A researcher wants to replicate the study to estimate the true population mean to within 0.7 maximum error. If the 94% level of confidence is adopted, how many respondents are needed?
The following are the heights of students in centimeters suppose samples of size 2 are taken from this population of four students Cardo,Alyana, Joaquin, Flora heights; 125,120,130,110
A. Compute the mean of the population
B. Compute the mean of the sampling distribution of the sample means
In your words explain how the theory of light resolves the conflict between newtonian mechanics and maxwell theory
Suppose we experiment with an Atwood machine consisting of two masses m and 2m connected by an inextensible nonslip string running over a pulley of radius a and mass 4m
A)Determine the total kinetic energy of the system. (6marks)
B)Find the gravitational potential energy of the system. (4)
C)briefly discuss why no work is done by the forces of constrait (5)
D)what is the total energy of the system (2)
E)Find the acceleration dv/dt of the blocks
An audio speaker producing a steady sound at an outdoor concert is 18 ft away from you. If you move to a position where the speaker is 67 ft distant, by what factor will the amplitude of the sound change?
Determine the electric flux through a Gaussian surface that contains 87 protons and 73 electrons.
The mercury-in glass thermometer has the ice and steam pint as 6cm and 31cm respectively. Calculate the height of the Mercury when the temperature is 60°
Write a program in C++ to generate the following pyramid of numbers.
0
1 0 1
2 1 0 1 2
3 2 1 0 1 2 3
4 3 2 1 0 1 2 3 4
5 4 3 2 1 0 1 2 3 4 5
6 5 4 3 2 1 0 1 2 3 4 5 6
Write a program in C++ to read a positive integer number n and to generate the numbers in the
following form.
For example,
Enter a number: 5
Output 5 4 3 2 1 0 1 2 3 4 5
Enter a number: 7
Output 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7
#339914 on Dec 2023