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James

Questions and answers by James, page 6

Questions (1,466)

Write the Gross and Net Ionic Equations for the following Reactions:LiNO3(aq)+(NH4)3N(aq) => Li3N(s)+ NH4NO3(aq) Al(s)+CuCl2(aq)
1. 6 answers
2. 1,157 views
I wanted to know if the MAC address is needed to be changed and does the ip address need to change if I move my computer from my
1. 1 answer
2. 488 views
This problem pertains to Cuisenaire Rods:1-white 2-red 3-green 4-purple 5-yellow 6-dark green 7-black 8-brown 9-blue 10-orange
1. 2 answers
2. 1,088 views
The percentage of research articles in a prominent journal written by researchers in the United States can be modeled byA(t) =
1. 2 answers
2. 1,225 views
Say, for example, that you had prepared a Buffer C, in which you mixed 8.203 g of sodium acetate, NaC2H3O2, with 100.0 mL of 1.0
1. 5 answers
2. 6,879 views
The Energy from glucose is obtained from the oxidation reactionC6H12O6 + 6O2 --> 6CO2 + 6H2O How would a similar reaction look
1. 2 answers
2. 703 views
Based on the data, of 40% Reading and 25% Math, Out of 240 students, how many would choose reading or math as their favorite
1. 4 answers
2. 492 views
The weightless horizontal bar in the figure below is in equilibrium. Scale B reads 4.00 kg (N.B. as you know, the scale should
1. 4 answers
2. 2,132 views
The system in the Figure is in equilibrium. A mass M1 = 242.0 kg hangs from the end of a uniform strut which is held at an angle
1. 2 answers
2. 589 views
A grocery store manager must decide whether to buy four rug cleaners to rent to customers. The manager estimates that the first
1. 4 answers
2. 1,772 views
Which of the following sentences is correct?"James arrives and, after a period of confusion, Mary's secret is revealed." "James
1. 5 answers
2. 390 views
what lifestyle factors of the bone affect the growth, development, size and/or healing (positively or negatively) of the tissue.
1. 1 answer
2. 404 views
what lifestyle factors of the muscle affect the growth, development, size and/or healing (positively or negatively) of the
1. 1 answer
2. 1,017 views
A ferryboat traveling at a speed of 30 km/h attempts to cross a river with a current of 5 km/h. What is the boat's speed
1. 2 answers
2. 830 views
A projectile is launched at an angle of 600. What other angle would give the same range for the projectile if we neglect air
1. 1 answer
2. 390 views
If rotational speed of a disc remains constant, what happens to the speed of a point on the disc if its distance from the axis
1. 4 answers
2. 389 views
41.Is the speed of light constant as it passes through transparent materials? Yes, the speed of is always constant No, light
1. 2 answers
2. 569 views
cos^2(x/2)-sin^2(x/2)2sin(x/2)cos(x/2)
1. 1 answer
2. 354 views
A ramp that is 4 ft., 3 ft.at one end. I want a 30% slope to the ground; how long should the ramp be?
1. 1 answer
2. 304 views
If 3feet*50metre is Rs.8720,how much would 2feet*40metre cost?
1. 2 answers
2. 803 views
A ball is thrown from a building standing 30m high, landing 10m away from the building 3.2 seconds after it was thrown. Find the
1. 2 answers
2. 561 views
What is the [H+] in a 0.10 M solution of ascorbic acid,C6H8O6?
1. 2 answers
2. 1,010 views
Find the terms. Leave coefficients as factorialsterm with t^5 in (v-t)^17 term with x^10 in (x+y)^19
1. 1 answer
2. 357 views
you have 1000 yards of fencing and you plan to use the fencing to make 2 enclosures, one circular and one a square. How much of
1. 1 answer
2. 457 views
you have 1000 yards of fencing and you plan to use the fencing to make 2 enclosures, one circular and one a square. How much of
1. 1 answer
2. 462 views
Please help me i cant figure out what goes in the blanks and this is the last question of my gizmo... THANKS!If the spring
1. 5 answers
2. 1,594 views
A 64.8 g mixture of the compounds potassium sulfide and calcium oxide is 17.1 % by mass potassium sulfide. The compound calcium
1. 1 answer
2. 445 views
Complete and balance the chemical equation. Be sure to include the states of the reactants and products.SO2(g)+O2(g) → thanks
1. 1 answer
2. 373 views
In his pocket, a boy has 3 red marbles, 4 blue marbles, and 4 green marbles. How many will he have to take out of his pocket to
1. 1 answer
2. 472 views
A discus thrower (with arm length of 1.2 m) starts from rest and begins to rotate counterclockwise with an angular acceleration
1. 4 answers
2. 2,544 views
A bullet is fired through a board 12.1 cm thick, with a line of motion perpendicular to the face of the board. If the bullet
1. 2 answers
2. 1,050 views
A runner of mass 51.5 kg starts from rest and accelerates with a constant acceleration of 1.35 m/s2 until she reaches a velocity
1. 4 answers
2. 522 views
An object is thrown upward with a speed of 21.5 m/s. How high above the projection point is it after 2.06 s?
1. 5 answers
2. 386 views
An object is thrown vertically and has an upward velocity of 5 m/s when it reaches three fourths of its maximum height above its
1. 1 answer
2. 463 views
An object is thrown vertically and has an upward velocity of 5 m/s when it reaches three fourths of its maximum height above its
1. 1 answer
2. 446 views
What is the velocity at the midway point of a ball able to reach a height y when thrown with an initial velocityv0? (Assume the
1. 5 answers
2. 3,781 views
A runner of mass 51.5 kg starts from rest and accelerates with a constant acceleration of 1.35 m/s2 until she reaches a velocity
1. 3 answers
2. 1,021 views
Max and Rich go hunting. They both know the area where they are hunting, and they separate to hunt from different positions.
1. 1 answer
2. 748 views
A truck travels 2.85 km north and then makes a 90° left turn and drives another 4.90 km. The whole trip takes 4.50 min.(a) With
1. 1 answer
2. 410 views
By trial and error, a frog learns that it can leap a maximum horizontal distance of 1.4 m. If, in the course of an hour, the
1. 3 answers
2. 383 views
A car drives straight off the edge of a cliff that is 68 m high. The police at the scene of the accident note that the point of
1. 1 answer
2. 485 views
A car drives straight off the edge of a cliff that is 68 m high. The police at the scene of the accident note that the point of
1. 1 answer
2. 470 views
Salmon often jump upstream through waterfalls to reach their breeding grounds. One salmon came across a waterfall 1.30 m in
1. 2 answers
2. 668 views
7. Two cars are moving. The first car has twice the mass of the second car, but only half as much kinetic energy. Then, both
1. 3 answers
2. 458 views
A hanging mass, M1 = 0.78 kg, is attached by a light string that runs over a frictionless pulley to a mass M2 = 1.48 kg that is
1. 2 answers
2. 1,253 views
According to a poll conducted in a company, 47% of the employees regularly use the internet while at work. You conduct a similar
1. 1 answer
2. 413 views
An ideal spring has the spring constant k = 414 N/m. Calculate the distance this spring must be stretched from its equilibrium
1. 2 answers
2. 605 views
A man throws a rock of mass m = 0.310 kg straight up into the air. In this process, his arm does a total amount of work Wnet =
1. 3 answers
2. 362 views
How much work is done against gravity in lifting a 6.5-kg weight through a distance of 21 cm?
1. 3 answers
2. 729 views
Suppose you throw a 0.054-kg ball with a speed of 11.5 m/s and at an angle of 31.8° above the horizontal from a building 13.1 m
1. 1 answer
2. 460 views
If it takes an average force of 5.4 N to push a 4.8-g dart 5.4 cm into a dart gun, assuming the barrel is frictionless, how fast
1. 2 answers
2. 494 views
Given the following properties, how much stretch would you expect to occur in a specimen of polyethylene to which a tensile load
1. 3 answers
2. 377 views
Hooke's law relates the amount of strain a material to the absolute amount of force applied.True or False?
1. 1 answer
2. 288 views
Stuck in the middle of a frozen pond with only your physics book, you decide to put physics in action and throw the 9-kg book.
1. 7 answers
2. 3,613 views
A 0.421-kg ball has an elastic, head-on collision with a second ball that is initially at rest. The second ball moves off with
1. 3 answers
2. 695 views
A motor drives a rope drum of 820 mm diameter, which in turn drags a component of mass 650 kg, 175 m up a slope that makes an
1. 1 answer
2. 488 views
What is FedEx’s strategy for success in the marketplace? Does the company rely primarily on a customer intimacy, operations
1. 1 answer
2. 430 views
A fire hose 3.8 cm in diameter is capable of spraying water at a velocity of 20 m/s. For a continuous horizontal flow of water,
1. 1 answer
2. 469 views
The density of a 5.0-m long rod can be described by the linear density function λ(x) = 140 g/m + 14.8x g/m2. One end of the rod
1. 1 answer
2. 455 views
A system consists of two particles. Particle 1 with mass 2.0 kg is located at (2.0 m, 6.0 m) and has a velocity of (2.1 m/s, 4.1
1. 2 answers
2. 601 views
You are to paint the globe held aloft by a statue of Atlas. Its diameter is 10.5 in. How much surface area must you cover with
1. 2 answers
2. 683 views
A pile of coal is stored in a barrel-shaped bin whose base has a radius of 3 meters. The height of the pile measures 1.5 meters.
1. 3 answers
2. 1,023 views
How many cement blocks are needed to construct a wall 0.5 ft. thick, 6 ft. high, and 60 ft. long if it takes 10 standard cement
1. 7 answers
2. 609 views
A ball having a mass of 4 kg is attached to a string 1 m long and is whirled in a vertical circle at a constant speed of 23 m/s.
1. 2 answers
2. 783 views
A ball of mass m = 0.2 kg is attached to a (massless) string of length L = 2 m and is undergoing circular motion in the
1. 3 answers
2. 610 views
5. A circular pizza of radius R has a circular piece of radius R/3 removed from one side. The center of mass of the pizza with
1. 4 answers
2. 2,344 views
10. A yo-yo is made by wrapping a 2-m long string around a 500-g 10-cm diameter uniform disk. The string is fastened to the
1. 3 answers
2. 628 views
A solid ball and a hollow ball, each with a mass of 2 kg and radius of 0.1 m, start from rest and roll down a ramp of length 2 m
1. 1 answer
2. 477 views
A force, F = (3x + 4y) N,is applied to an object at a point whose position vector with respect to the pivot point is r = (3x +
1. 2 answers
2. 563 views
A small circular object with mass m and radius r has a moment of inertia given by I = cmr^2. The object rolls without slipping
1. 4 answers
2. 617 views
The system shown in the figure is held initially at rest. Calculate the angular acceleration of the system as soon as it is
1. 3 answers
2. 1,087 views
A uniform rigid pole of length L and mass M is to be supported from a vertical wall in a horizontal position, as shown in the
1. 3 answers
2. 644 views
A track has a height that is a function of horizontal position x, given by h(x) = x^3 + 4x^2 − 44x + 16.Find all the positions
1. 7 answers
2. 524 views
A ladder of mass 39.4 kg and length 2.88 m is leaning against a wall at an angle θ. The coefficient of static friction between
1. 1 answer
2. 450 views
Suppose a new extrasolar planet is discovered. Its mass is double the mass of the Earth, but it has the same density and
1. 3 answers
2. 1,148 views
In a statistic class, 10 scores were randomly selected with the following results were obtained: 74, 73, 87, 57, 71, 68, 65, 77,
1. 4 answers
2. 1,453 views
A firm has 30% of its service calls made by a contractor, and 15% of these calls result in customer complaints. The other 70% of
1. 3 answers
2. 2,305 views
Standing on the surface of a small spherical moon whose radius is 6.30 104 m and whose mass is 8.00 1018 kg, an astronaut throws
1. 4 answers
2. 2,095 views
Strength is defined as the amount of stress a material can withstand before fracturing. Therefore, the more strength a material
1. 3 answers
2. 1,205 views
Eris, the largest dwarf planet known in the Solar System, has a radius R = 1200 km and an acceleration due to gravity on its
1. 2 answers
2. 528 views
A comet orbits the Sun with a period of 72.0 yr.(a) Find the semimajor axis of the orbit of the comet in astronomical units (1
1. 1 answer
2. 510 views
p=80000, r=10.5, t=15, m=12
1. 3 answers
2. 349 views
A wooden block floating in seawater has two thirds of its volume submerged. When the block is placed in mineral oil, 10% of its
1. 2 answers
2. 552 views
In a hydraulic lift, the maximum gauge pressure is 16.70 atm. If the diameter of the output line is 24.6 cm, what is the
1. 4 answers
2. 446 views
At what time between 7 and 8 on an analog clock do the hour and minute hand overlap?
1. 2 answers
2. 933 views
When a mass is attached to a vertical spring, the spring is stretched a distance d. The mass is then pulled down from this
1. 2 answers
2. 514 views
You want to rent an unfurnished one-bedroom apartment in Boston next year. The mean monthly rent for a random sample of 14
1. 2 answers
2. 765 views
You want to rent an unfurnished one-bedroom apartment in Boston next year. The mean monthly rent for a random sample of 14
1. 4 answers
2. 2,864 views
In a study of children with a particular disorder, parents were asked to rate their child on a variety of items related to how
1. 3 answers
2. 1,623 views
A 3-kg mass attached to a spring with k = 145 N/m is oscillating in a vat of oil, which damps the oscillations.(a) If the
1. 2 answers
2. 596 views
if car A is going 40 mph and car B is stationary , how fast would car b have to go to cath up to car A in 4/10 of a mile
1. 1 answer
2. 367 views
A string is 37.5 cm long and has a mass per unit length of 5.95 10-4 kg/m. What tension must be applied to the string so that it
1. 2 answers
2. 762 views
A 48-cm-long wire with a mass of 11.0 g is under a tension of 50.5 N. Both ends of the wire are held rigidly while it is
1. 7 answers
2. 782 views
The tension in a 2.6-m-long, 1.1-cm-diameter steel cable (ρ = 7800 kg/m3) is 860 N. What is the fundamental frequency of
1. 3 answers
2. 987 views
A sinusoidal wave traveling on a string is moving in the positive x-direction. The wave has a wavelength of 6 m, a frequency of
1. 4 answers
2. 570 views
The Estradas are planning to buy a house 5 years from now. Housing experts in their area have estimated that the cost of a home
1. 5 answers
2. 954 views
A comet orbits the Sun with a period of 72.0 yr.(a) Find the semimajor axis of the orbit of the comet in astronomical units (1
1. 2 answers
2. 677 views
The thermal conductivity of fiberglass batting, which is 8.9 in thick, is 8.6 10-6 BTU/(ft °F s). What is the R value (in ft2
1. 5 answers
2. 477 views
Suppose 100 g of water at 20°C is poured over a 70-g cube of ice with a temperature of -8°C. If all the ice melts, what is the
1. 7 answers
2. 782 views
A 19-g lead bullet is shot with a speed of 340 m/s into a wooden wall. Assuming that 70% of the kinetic energy is absorbed by
1. 4 answers
2. 468 views

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