aspifsGak5u
2021-12-19
Answered

Solve $A=\frac{1}{2}$ bh for b. Then find the base of a triangle with a height of 6 inches and an area of 24 square inches.

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asked 2020-11-22

The specific heat of lead is 0.030 cal/g.C. 300 grams of leadshot at 100C is mixed with 100 grams of water at 70C in an insulated container. The final temperature of the mixture is:

A) 100C

b) 85.5C

c)79.5C

d) 74.5C

e)72.5C

A) 100C

b) 85.5C

c)79.5C

d) 74.5C

e)72.5C

asked 2020-10-28

A stone hangs by a fine thread from the ceiling,and a section of the same thread dangles from the bottom of the stone.If a person gives a sharp pull on the dangling thread,where is the thread likely to break:below the stone or above it?

asked 2020-11-01

A horizontal force of 210N is exerted on a 2.0 kg discus as it rotates uniformaly in a horizontal circle ( at arm's length ) of radius .90 m. Calculate the speed of the discus

asked 2021-02-26

A tow truck pulls a car that is stuck in the mud, with a force of 2500 N as in Fig P5.27 The tow cable is under tension and therefor pulls downward and to the left on the pin at its upper end. The light pin is held in equilibrium by forces exerted by the two bars A and B. Each bar is a strut that is, each is a bar whose weight is small compared to the forces it exerts, and which exerts forces only through hinge pins at its ends. Each strut exerts a force directed parallel to its length. Determine the force of tension or compression in each strut. Proceed as follows Make a guess as to which way (pushing or pulling ) each force acts on the top pin Draw a free-body diagram of the pin. Use the condition for equilibrium of the pin to translate the free-body diagram into equations. From the equations calculate the forces exerted by struts A and B. If you obtain a positive answer, you correctly guessed the direction of the force. A negative answer means the direction should be reversed, but the absolute value correction should be reversed, but the absolute value correctly gives the magnitude of the force. If a strut pulls of a pin, it is in tension. If it pushes, the strut is in compression. Identify whether each strut is in tension or in compression.

asked 2022-07-28

. Determine whether each of these functions is a bijection

from R to R.

a) f (x) = −3x + 4

b) f (x) = −3x2 + 7

c) f (x) = (x + 1)/(x + 2)

d) f (x) = x5 + 1

asked 2021-01-31

A bowler throws a bowling ball of radius

a) What is v in terms of omega?

b) During the sliding, what are the ball's linear accelerationand

c) angular acceleration?

d) How long does the ball slide?

e) How far does the ball slide?

f) What is the linear speed of the ball when smooth rollingbegins?

asked 2021-08-10

A survey was designed to study how business operations vary according to their size. Companies were classified as small, medium, or large. Questionnaires were sent to 200 randomly selected businesses of each size. Because not all questionnaires were returned, researchers decided to investigate the relationship between the response rate and the size of the business. The data are given in the two-way table.

Which variable should be used as the explanatory variable? Explain.