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Erin

Questions (22)

Which of the following values of x is a solution to the equationsin x+cos x=1? Hint: Think about the graphs of sine and cosine
1. 1 answer
2. 247 views
which transformation is not in this function? f(x) = sinx to g(x) = −2 sin (3x−120) −8A horizontal compression by a
1. 2 answers
2. 381 views
how many grams of oxygen are required to react completely with 5.56 moles of hydrogen to form water?2H2 + O2. 2H2O
1. 2 answers
2. 951 views
Suppose you must remove an average of 3.4 X 10 ^8 J of thermal energy per day to keep your house cool during the summer. If you
1. 0 answers
2. 627 views
A 155 g aluminum cylinder is removed from a liquid nitrogen bath, where it has been cooled to -196 degrees c. The cylinder is
1. 2 answers
2. 882 views
A rock climber hangs freely from nylon rope that is 16 m long and has a diameter of 8.1 mm. If the rope stretches 4.2 cm, what
1. 2 answers
2. 1,207 views
An exercise machine indicates that you have worked off 2.1 calories in a minute and a half of running in place. What was your
1. 1 answer
2. 1,143 views
The command module orbited at an altitude of 110 km above the lunar surface. How much time did it take for the command module to
1. 5 answers
2. 1,649 views
A skateboarder at a skate park rides along the path. If the speed of the skateboarder at point A is v=1.4 m/s what is her speed
1. 1 answer
2. 1,684 views
A child pedals a tricycle, giving the driving wheel an angular speed of w=.875 rev/s. If the radius of the wheel is r=0.260 m,
1. 2 answers
2. 1,946 views
The reaction of 5.25 g of Carbon with excess O2 yields 10.2 g of CO2. What is the percent yield of this reaction?
1. 2 answers
2. 1,153 views
According to the rules of golf, a golf ball cannot weigh more than 45.97 grams, and it must be at least 4.267 cm in diameter.
1. 1 answer
2. 3,082 views
a. Find the magnitude of the force required to keep a 3100-pound car from sliding down a hill inclined at 5.7° from the
1. 1 answer
2. 1,578 views
The dimensions of a triangular lot are 193 feet by 134 feet by 186 feet. If the price of such land is $3 per square foot,
1. 1 answer
2. 658 views
The magnitude and direction of two forces acting on an object are 100 pounds, S79degreesE, and 60 pounds N68degreesE,
1. 2 answers
2. 1,303 views
Two ships leave a harbor at the same time. One ship travels on a bearing S11 degrees W at 12 mph. The second ship travels on a
1. 4 answers
2. 2,922 views
Find the exact trigonometric function of cos(2a).hyp: 17 opp: 15 adj: 8
1. 1 answer
2. 507 views
If tan a= 12/15, 0 degrees < a < 90 degrees, then find the exact value of each of the following:A. Sin a/2 B. Cos a/2 C. Tan a/2
1. 1 answer
2. 799 views
The angular speed of a point on a planet is 3pi/7 radian per hour. The equator lies on a circle of radius approximately 9000
1. 1 answer
2. 4,859 views
The seats of a Ferris wheel are 40 feet from the wheel's center. When you get on the ride, your seat is 6 feet above the
1. 2 answers
2. 4,707 views
A pediatrician prescribes the antibiotic amoxicillin to treat a child suffering from an ear infection. The prescribed dose is to
1. 1 answer
2. 3,897 views
Which of the following salts is water soluble?AlCl3, Li2SO4, BaC2O4, NaF, NiS, FeBr2, (NH4)2CO3, Zn(NO3)2, Na3PO4, Mg(OH)2,
1. 2 answers
2. 781 views

Answers (5)

Thank you!
I am not good at physics, hence why I came here for help and not to be put down. Thanks.
How do I find the radius of the orbit?
it means Potassium hydrogen phthalate does not absorb water
Could you explain the second part more please?

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