Pre-Calculus

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Four forces are acting on a disk as shown in the Figure 1.
Four forces are acting on a disk as shown in the Figure 1. The radius and the mass of the disk are 10 cm and 2 kg, respectively. The disk is free to rotate about a frictionless axle going through its … read more
akch2002
M.Tech.
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Answer the following questions using the z-score chart or by
Answer the following questions using the z-score chart or by using a spreadsheet.7. The Weights of 100 remote control cars at a competition are approximately normally distributed. The average weight i… read more
R.R. Jha
Bachelor's Degree
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An object of mass 0.5 kg is tied to the end of a 1.2 m long
An object of mass 0.5 kg is tied to the end of a 1.2 m long string and is swung in a vertical circle with a constant angular speed. (a). Find the angular speed and the tangential speed of the object a… read more
Debdatta Bhattachary
Doctoral Degree
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Particle A has half the mass and eight times the kinetic
Particle A has half the mass and eight times the kinetic energy of particle B. What is their momentum ratio, 𝑃𝐴 / PB?… read more
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Doctoral Degree
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A crate of mass 8 kg is moved up a distance of 5 m along an
Second opinion] A crate of mass 8 kg is moved up a distance of 5 m along an inclined plane by a 100 N force. The incline makes a 30 degrees with the horizontal. The coefficient of kinetic friction bet… read more
akch2002
M.Tech.
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A crate of mass 8 kg is moved up a distance of 5 m along an
Second opinion] A crate of mass 8 kg is moved up a distance of 5 m along an inclined plane by a 100 N force. The incline makes a 30 degrees with the horizontal. The coefficient of kinetic friction bet… read more
Mr. Gregory White
Master's Degree
Master's Degree
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A crate of mass 8 kg is moved up a distance of 5 m along an
Second opinion] A crate of mass 8 kg is moved up a distance of 5 m along an inclined plane by a 100 N force. The incline makes a 30 degrees with the horizontal. The coefficient of kinetic friction bet… read more
Debdatta Bhattachary
Doctoral Degree
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A 200 g block rests on a horizontal, frictionless surface as
A 200 g block rests on a horizontal, frictionless surface as shown in Figure 2. When the block is at point A, the spring is at its natural length. Now the spring is compressed 15 cm by pressing the bl… read more
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What is the kinetic energy of a car that is traveling at
What is the kinetic energy of a car that is traveling at 15.3 m/s if it has a mass of 1,283 kg?… read more
Tom Piscaer
Engineer
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A uniform beam AB, of mass 45kg and length 16m, rests
A uniform beam AB, of mass 45kg and length 16m, rests horizontally on supports C and D where AC=5m and CD= 9m. When a child stands at A, the beam is on the point of tilting about C. Find the mass of t… read more
akch2002
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1.If a certain force accelerates an object of mass 27 Kg at
1.If a certain force accelerates an object of mass 27 Kg at 50 m/s/s, what acceleration in m/s/s would the same force produce on another object of mass 27? Enter answer to at least one decimal place t… read more
Ryan
Bachelor's Degree
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Body Mass Index The United States is becoming more health
Body Mass Index The United States is becoming more health conscious, and as a result, the problem of obesity has gotten more attention. The Body Mass Index (BMI), relates a person's height and weight,… read more
akch2002
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A runoff for a truck consists of aa 500 meter horizontal runway
A runoff for a truck consists of aa 500 meter horizontal runway with course gravel to stop the truck. THe mass of the truck is 5000 kg, the coefficient of friction on the gravel is .8 A) if the trucks… read more
Chirag
Master's Degree
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Do you think that conversions in the metric system are easier
Do you think that conversions in the metric system are easier to make than conversions in the US system of measurements? Why or why not? Ø Find two informative websites that cover metric and or custom… read more
Ray Atkinson
Bachelor's Degree
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1) Water flows into a swimming pool at the rate of 6.55 gal/min.
1) Water flows into a swimming pool at the rate of 6.55 gal/min. If the pool dimension are 23.6 ft wide, 46.9 ft long, and 19.7 ft deep, how long does it take to fill the pool? (1 gallon=231 cubic inc… read more
Trigeoscal
College Math Professor
Master's Degree
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A tower is 559 m high, and it has an observation deck at the
A tower is 559 m high, and it has an observation deck at the 332 m level, how far from the top of the tower must a 559 m high helicopter be in order that the angle subtended at the helicopter by the p… read more
Ryan
Bachelor's Degree
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I need some help with te following questons. 3. Two of the
I need some help with te following questons. 3. Two of the top grossing concert tours were by jazz bands and a rock band. Togther the two visited 173 cities. The jazz band visited 95 cities more than … read more
mhasan420
Master's Degree
Bachelor's Degree
37 satisfied customers
28 is 40% of what number? Choose the best answer from
28 is 40% of what number? Choose the best answer from the options below: A 7 B 11.2 C 70 D 112 70% of 3,000 is what number? Choose the best answer from the options below: A 2.3 B 23 C 2,100 D 4,286 60… read more
Mr. Gregory White
Master's Degree
Master's Degree
167 satisfied customers
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