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To keep his basketball team hydrated, Daniel mixes a powdered sports drink with cold water. For best taste the mix should be 96%
1. 0 answers
2. 972 views
A ball is thrown straight up with an initialspeed of 30 m/s. How high does it go? Assume the acceleration of gravity is 10 m/s 2
1. 1 answer
2. 692 views
Given that f is a differentiable function with f(2,5) = 6, fx(2,5) = 1, and fy(2,5) = -1, use a linear approximation to estimate
1. 1 answer
2. 4,043 views
particle A moves along the line y = 30m with a constant velocity of magnitude 3.5 m/s and parallel to the x axis. At the instant
1. 2 answers
2. 3,767 views
How might Hobbes argue that from the time of reformation (1517), with decline in the power of the pope, to WW1 no sufficient
1. 0 answers
2. 377 views
An electron drop to what energy level is likely to emit a photon in the infrared region?
1. 2 answers
2. 450 views
two stones with initial speeds of 13 m/s and are thrown at an angle 30 degrees, one below the horizontal and one above the
1. 0 answers
2. 473 views
two stones with initial speeds of 13 m/s and are thrown at an angle 30 degrees, one below the horizontal and one above the
1. 0 answers
2. 584 views
two stones with initial speeds of 13 m/s and are thrown at an angle 30 degrees, one below the horizontal and one above the
1. 0 answers
2. 526 views
Which of the following method depends on heavily on the observers memory.
1. 1 answer
2. 450 views
There are several strategies that can help preschool children Foster language production one strategy that involves asking
1. 2 answers
2. 458 views
When preschool child is first learning to print. alphabet letters he or she print letters upside down or backwards the teacher
1. 3 answers
2. 620 views
A woman driving at a speed of 23 m/s sees a deer on the road ahead and applies the brakes when she is 210 m from the deer. If
1. 3 answers
2. 1,175 views
how many squares with sides that are 6 inches long and needed to cover a aquare with a side length of 30 inches without over
1. 11 answers
2. 498 views
how many boxes can 372 be equally divided into?
1. 1 answer
2. 337 views
given that (the square root)1,225 = 35, evauluate 250(to second power)
1. 1 answer
2. 362 views
what is the cube root of 9,261?
1. 5 answers
2. 433 views
a factory has a machine which bends wire at a rate of 8 units of curvature per second. how long does it take to bend a straight
1. 0 answers
2. 725 views
In what ways do different ideologies and political systems influence the environment in which MNCs operate?
1. 0 answers
2. 754 views
Write a complete NQC program that spins for 2 minutes a Lego motor connected to the RCX output port B.
1. 0 answers
2. 388 views
20.007 in expanded form
1. 2 answers
2. 496 views
Using the equation y=(3x+2)(x+2) determine the x intercepts, the axis of symmetry and the vertex. I changed this equation into
1. 1 answer
2. 575 views
lets say you have a tree or a flagpole. Describe how you would measure this object using right angled triganometry
1. 3 answers
2. 422 views
lets say you have a tree or a flagpole. Describe how you would measure this object using right angled triganometry
1. 3 answers
2. 445 views
Is the former name of the Democratic Republic of the Congo Zaire?
1. 1 answer
2. 454 views
In X over 8 = 2 how do i find X?
1. 1 answer
2. 318 views
The sun bombards the earth with about 1KJ m^-2s^-1. Calculate the maximum mass of pure ethanol that can be vaporized in 10 min
1. 0 answers
2. 404 views
3. A projectile is launched at 10.0 m/s in a direction 45.0 degrees above the horizon. It hits the ground 10.0 m below its
1. 3 answers
2. 1,602 views
Three masses that are 10 kg each are located at the corners of an equilateral triangle, with side length of 0.55m. What is the
1. 1 answer
2. 1,240 views
A 2.0-kg piece of steel with a temperature of 70°C is submerged in 1.0 kg of water at 15°C. At what temperature does the
1. 3 answers
2. 1,631 views
Which one of the following will form a standing wave: (1) two waves of the same amplitude and speed moving in the same direction
1. 1 answer
2. 688 views
Two cylindrical rods are made of the same material and have the same length but one is hollow and other is solid. Both are
1. 2 answers
2. 756 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. 3 answers
2. 608 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. 6 answers
2. 920 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. 4 answers
2. 596 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. 811 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. 4 answers
2. 1,038 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. 3 answers
2. 691 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. 2 answers
2. 1,097 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. 6 answers
2. 894 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. 1 answer
2. 872 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. 448 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. 1 answer
2. 698 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. 1 answer
2. 1,740 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. 2,991 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. 1 answer
2. 872 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. 1 answer
2. 595 views
At what time between 7 and 8 on an analog clock do the hour and minute hand overlap?
1. 1 answer
2. 1,032 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. 3 answers
2. 540 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. 0 answers
2. 696 views
p=80000, r=10.5, t=15, m=12
1. 2 answers
2. 425 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. 0 answers
2. 632 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. 1 answer
2. 618 views
Strength is defined as the amount of stress a material can withstand before fracturing. Therefore, the more strength a material
1. 2 answers
2. 1,305 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. 2 answers
2. 2,192 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. 1 answer
2. 2,429 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. 2 answers
2. 1,566 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. 1 answer
2. 1,286 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. 535 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. 597 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. 2 answers
2. 758 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. 1 answer
2. 1,164 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. 3 answers
2. 724 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. 1 answer
2. 648 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. 584 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. 2 answers
2. 740 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. 2 answers
2. 2,470 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. 2 answers
2. 686 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. 1 answer
2. 890 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. 710 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. 2 answers
2. 1,088 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. 1 answer
2. 761 views
A discus thrower (with arm length of 1.2 m) starts from rest and begins to rotate counterclockwise with an angular acceleration
1. 1 answer
2. 2,688 views
1. A slingshot is used to launch a 5.00-gram rock. The effective spring constant of the slingshot is 200 N/m. By what distance
1. 3 answers
2. 1,443 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. 1 answer
2. 690 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. 548 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. 570 views
What is FedEx’s strategy for success in the marketplace? Does the company rely primarily on a customer intimacy, operations
1. 0 answers
2. 517 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. 0 answers
2. 556 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. 0 answers
2. 798 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. 5 answers
2. 3,772 views
Hooke's law relates the amount of strain a material to the absolute amount of force applied.True or False?
1. 0 answers
2. 344 views
Given the following properties, how much stretch would you expect to occur in a specimen of polyethylene to which a tensile load
1. 2 answers
2. 471 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. 1 answer
2. 570 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. 546 views
How much work is done against gravity in lifting a 6.5-kg weight through a distance of 21 cm?
1. 2 answers
2. 779 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. 2 answers
2. 470 views
An ideal spring has the spring constant k = 414 N/m. Calculate the distance this spring must be stretched from its equilibrium
1. 1 answer
2. 704 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. 0 answers
2. 493 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. 1 answer
2. 1,349 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. 1 answer
2. 557 views
Salmon often jump upstream through waterfalls to reach their breeding grounds. One salmon came across a waterfall 1.30 m in
1. 1 answer
2. 741 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. 583 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. 586 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. 2 answers
2. 479 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. 476 views
Max and Rich go hunting. They both know the area where they are hunting, and they separate to hunt from different positions.
1. 0 answers
2. 819 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. 1 answer
2. 1,157 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. 4 answers
2. 3,944 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. 558 views

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