Search & Filtering
What is your impression of your school as an institution of learning? The quality of its graduates,its facilities such as the laboratory,the library,and the like?
For each of the ff. sets, determine whether 2 is an element of that set.
a. {๐ฅโโ|๐ฅ ๐๐ ๐๐ ๐๐๐ก๐๐๐๐ ๐๐๐๐๐ก๐๐ ๐กโ๐๐ 1}
b. {๐ฅโโ|๐ฅ ๐๐ ๐กโ๐ ๐ ๐๐ข๐๐๐ ๐๐ ๐๐ ๐๐๐ก๐๐๐๐}
c. {2,{2}}
d. {{2},{{2}}}
Determine whether each of these pairs of sets are equal.
a. {1,3,3,3,5,5,5,5},{5,3,1}
b. {{1}}{1,{1}}
c. โ ,{โ }
A mass of 4 kg is suspended from a spring and oscillates up and down at 2 Hz. Determine the stiffness of the spring. (631.6 N/m). The amplitude of the oscillation is 5 mm. Determine the displacement. velocity and acceleration 0.02 s after the mass passes through the mean or rest position in an upwards direction. (1.243 mm. 60.86 nm's and -196.4 m/s) I
a random sample of 429 college students was interviewed about a number of matters. use the results to construct confidence interval estimates of the population mean at the 99% level.
A. they reported that they had sent an average of $478.23 on textbooks during the previous semester , with a sample standard deviation of $15. 78
B. They also reported that they had visited the health clinic an average of 1.5 times a semester with a sample standard deviation of 0.3
C. on the average, the sample had missed 2.8 days of classes per semester because of illness with a sample standard deviation of 1.0
D. on the average, the sample had missed 3.5 days of classes per semester for reason other then illness, with a sample standard deviation of 1.5
please use excel
When copper is heated with an excess of sulfur, copper(I) sulfide is formed. In a given experiment, 1.50 g of copper was heated with excess sulfur to yield 1.53 g copper(I) sulfide. What is the percent yield?
Answer this question please with solution Thank you.
Two point charges, q1 = 8 ยตC and q2 = -5 ยตC, are separated by a distance r = 0.1 m. What is the magnitude of the electric force? Note: 1 ยตC = 10-6 C.
Which of the following statements is incorrect.
Select one:
A. If the population in South Africa grows at 5% per year, and the economic growth rate is 3% per year, a decline in the real GDP per capita occurs.
B. Stabilization policies refers to fiscal policy and monetary policy.
C. An increase in nominal GDP can result from an increase in the quantity produced of goods and services and or/the increase in the prices of goods and services produced.
D. An increase of 20% in the price of lamb meat is an example of inflation.
A vendor claims that the variance for measurement of tiles that his factory produce were 13
square feet. A sample of nine tiles was measured in square feet and the results of the tiles
produced were recorded as below:
204.5 206.3 202.4
207.8 203.1 206.2
203.8 206.6 205.8
(Assuming the sample comes from a normal population)
i) Calculate the point estimate of the population mean.
(2 marks)
ii) Compute the variance and standard deviation.
(3 marks)
iii) Determine the estimate of 95% confidence interval for the population mean of the
tiles.
1.Find the potential at a distance of 0.07 m from a -6 nC charge.
2.What would be the PE of a -5 nC charge placed at this point?
3.What is the electric field strength at a point 40 cm from the a charge of 5x10^-9 C?
#339914 on Dec 2023