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Questions (192)

An ice cube of volume 17.7 cm3 is initially at a temperature of -19.3°C. How much heat is required to convert this ice cube
1. 2 answers
2. 716 views
How much heat is required to raise the temperature of a 4.3-kg block of steel by 48 K? (The specific heat of this steel is 450
1. 1 answer
2. 521 views
A tank of water sits at the edge of a table of height 1.4 m. The tank springs a very small leak at its base, and water sprays
1. 0 answers
2. 691 views
Water is flowing through a pipe (area 4.0 cm2) that connects to a faucet adjusted to have an opening of 0.57 cm2. If the water
1. 1 answer
2. 1,164 views
Two metal blocks are attached by a cable as shown in the figure below and are submerged at rest near the surface of a lake. If
1. 1 answer
2. 1,080 views
You want to design a helium-filled balloon that will lift a total payload of 1225 kg. What volume of helium is needed to just
1. 1 answer
2. 896 views
A block of mass 20 g sits at rest on a plate that is at the top of the fluid on one side of a U-tube as shown below. The U-tube
1. 0 answers
2. 640 views
A syringe has an area of 1.4 cm2 at its barrel and then narrows down to an area of 0.08 mm2 at the needle end. If a force of 5.5
1. 1 answer
2. 1,006 views
A bucket is filled with a combination of water (density 1,000 kg/m3) and oil (density 700 kg/m3). These fluids do not mix. (The
1. 4 answers
2. 1,406 views
A U-tube contains two fluids with densities ρ1 = 1070 kg/m3 and ρ2 = 595 kg/m3 as sketched below. What is the difference d in
1. 1 answer
2. 602 views
What responsibilities do patents have for their children's health?
1. 1 answer
2. 609 views
Solve the equation on the interval [0,360) cos^2t+2cos(t)+1=0
1. 1 answer
2. 1,355 views
Find all solutions in the interval [0,360) sin(4t)=�ã3/2
1. 1 answer
2. 475 views
Nothing
1. 3 answers
2. 533 views
You are pushing a refrigerator across the floor of your kitchen. You exert a horizontal force of 273 N for 7.2 s, during which
1. 1 answer
2. 762 views
A rock of mass 0.086 kg is thrown upward with an initial speed of 13 m/s. Find the work done by gravity on the rock from the
1. 1 answer
2. 506 views
A car of mass 1,700 kg is initially traveling at a speed of 25 m/s. The driver then accelerates to a speed of 35 m/s over a
1. 1 answer
2. 858 views
A car of mass 1,700 kg is initially traveling at a speed of 25 m/s. The driver then accelerates to a speed of 35 m/s over a
1. 1 answer
2. 636 views
A block of mass is pulled along a rough horizontal surface by a rope as sketched in the figure below. The tension in the rope is
1. 0 answers
2. 793 views
A crate of mass 29 kg is pushed up a ramp by a person as shown in the figure below. The person pushes the crate a distance of 25
1. 1 answer
2. 1,334 views
A crate of mass 59 kg is pushed across a level floor by a person. If the person exerts a force of 30 N in the horizontal
1. 1 answer
2. 517 views
i can not seem to find who the Fictional Character Justice Johnson is, i don't even see it anywhere in my book?
1. 1 answer
2. 375 views
A sphere of mass 85 kg is attached to one end of a rope as shown in the figure below. It is found that the rope does an amount
1. 2 answers
2. 1,246 views
Speed of a satellite orbit (physics problem)?What is the speed of a satellite in a geosynchronous orbit about Earth?
1. 1 answer
2. 867 views
In recent years, a number of nearby stars have been found to possess planets. Suppose, the orbital radius of such a planet is
1. 1 answer
2. 557 views
Saturn makes one complete orbit of the Sun every 29.4 years. Calculate the radius of the orbit of Saturn. Hint: It is a very
1. 2 answers
2. 1,392 views
A stone of mass 0.31 kg is tied to a string of length 0.65 m and is swung in a horizontal circle with speed v. The string has a
1. 1 answer
2. 843 views
Consider points on the Earth's surface as sketched in the figure below. Because of the Earth's rotation, these points undergo
1. 0 answers
2. 610 views
Suppose the circular track in the figure below has a radius of 104 m and the runner has a speed of 3.3 m/s.
1. 0 answers
2. 623 views
Suppose the circular track in the figure below has a radius of 104 m and the runner has a speed of 3.3 m/s.
1. 0 answers
2. 441 views
A jogger is running around a circular track of circumference 480 m. If the jogger has a speed of 11 km/h, what is the magnitude
1. 1 answer
2. 1,101 views
Mars has two moons, Phobos and Deimos. It is known that the larger moon, Phobos, has an orbital radius of 9.4 106 m and a mass
1. 0 answers
2. 629 views
Uranus makes one complete orbit of the Sun every 83.8 years. Calculate the radius of the orbit of Uranus. Hint: It is a very
1. 1 answer
2. 1,186 views
The region of the solar system between Mars and Jupiter contains many asteroids that orbit the Sun. Consider an asteroid in a
1. 1 answer
2. 643 views
Find the gravitational force of the Sun on Jupiter.
1. 1 answer
2. 435 views
The track near the top of your favorite roller coaster has a circular shape with a diameter of 36 m. When you are at the top,
1. 1 answer
2. 1,101 views
The track near the top of your favorite roller coaster has a circular shape with a diameter of 36 m. When you are at the top,
1. 1 answer
2. 2,274 views
Consider the motion of the rock in the figure below. What is the minimum speed the rock can have without the string becoming
1. 6 answers
2. 1,334 views
A bicycle wheel of radius 0.2 m is spinning at a rate of 70 revolutions per minute.
1. 1 answer
2. 538 views
A soccer ball is kicked with an initial speed of 27 m/s at an angle of 20° with respect to the horizontal.A) find the maximum
1. 1 answer
2. 767 views
A soccer ball is kicked with an initial speed of 27 m/s at an angle of 20° with respect to the horizontal.
1. 2 answers
2. 630 views
A quarterback is asked to throw a football to a receiver that is 32.6 m away. What is the minimum speed that the football must
1. 2 answers
2. 702 views
A cable attached to a block of mass 8 kg pulls the block along a horizontal floor at a constant velocity. If the tension in the
1. 1 answer
2. 737 views
Two children are playing on a 154-m-tall bridge. One child drops a rock (initial velocity zero) att = 0. The other waits 1.1 s
1. 1 answer
2. 602 views
A squirrel is resting in a tall tree when it slips from a branch that is 43 m above the ground. It is a very agile squirrel and
1. 1 answer
2. 882 views
Which statement about the relationship between the president and the Cabinet is false?=Because the president is so busy, members
1. 3 answers
2. 699 views
Article II of the United States Constitution established the _____.presidency only presidency and the vice presidency the vice
1. 1 answer
2. 671 views
Since the 1970s, the Supreme Court has interpreted the Equal Protection Clause as prohibiting the government from making "_____"
1. 6 answers
2. 517 views
Which statement does NOT characterize Martin Luther King Jr.'s "I Have a Dream" speech?1.)It openly criticized the Governor of
1. 5 answers
2. 3,014 views
Which is NOT true of the segregation laws passed after the Civil War?=They prohibited interracial marriage. They did not only
1. 1 answer
2. 575 views
The Constitution gives sovereignty only to the _____.?A.State legislatures B.national government C.president of the United
1. 1 answer
2. 517 views
_____ States supported the _____ Plan, which called for a bicameral legislature in which States would be represented according
1. 1 answer
2. 470 views
Which of the following was NOT a reason why a stronger central government was needed?To solve the economic problems of the
1. 1 answer
2. 585 views
What materials can I use to make an imprint like a fossil?
1. 1 answer
2. 443 views
Suppose you find a fossil imprint of an animal that existed many years ago.How can I make a model to compare that imprint to the
1. 0 answers
2. 431 views
Which is NOT a responsibility of the Department of Agriculture?1. The opening of foreign markets to U.S. agricultural products
1. 2 answers
2. 662 views
Determine the sample size needed in order to be 95 percent confident the p, the sample proportion of HD television sets that
1. 0 answers
2. 561 views
In solving the equation (x + 3)(x + 1) = 48, Eric stated that the solution would bex + 3 = 48 => x = 45 or (x + 1) = 48 => x =
1. 2 answers
2. 555 views
A football player has to push a blocking sled the length of a football field. What are two ways the workload for the football
1. 0 answers
2. 682 views
Find f^-1(13), f(x)= 2x^5 + 3x^3 + 8xand find D(f^-1(x)) at x=13. Is this correct... I got 1/27 ??
1. 0 answers
2. 330 views
What is the pH of a solution that is comprised of 0.0843 M HCl and 0.0287 M HClO4?
1. 1 answer
2. 629 views
aqueous sulfurous acid H2SO3 was made by dissolving 0.200 L of sulfur dioxide gas at 19 C and 745 mm Hg in water to yield 500.0
1. 2 answers
2. 2,886 views
What is the volume of Tin(Sn)?Mass of sample = 2.588g Initial vol. of water = 31 m/L Final vol. of water = 32 m/L
1. 1 answer
2. 445 views
A damped mass-spring system oscillates at 190 Hz. The time constant of the system is 2.0 s. At t = 0, the amplitude of
1. 0 answers
2. 759 views
The 2 kg block in Figure 7-25 slides down a frictionless curved ramp, starting from rest at a height of h = 3 m. The block then
1. 1 answer
2. 4,564 views
Determine whether the function is periodic. State the period, the domain and the range of g(x)= 2 cos 2x+3 sin 5x
1. 0 answers
2. 527 views
A person of mass 55 kg stands at the center of a rotating merry-go-round platform of radius 3.4 m and moment of inertia 670
1. 1 answer
2. 1,480 views
If you are given a problem that has measurements in yards and asks you to find surface area, what would the units be in your
1. 1 answer
2. 399 views
A student wanted to synthesize the anesthetic 2-ethoxy-2-methylpropane. She used ethoxide ion and 2-chloro-2-methylpropane for
1. 0 answers
2. 644 views
there are two vectors in quadrant threeone with a magnitude of 31.0N and has a direction of 117degrees in the negative direction
1. 0 answers
2. 666 views
Find the scalar product of the vectors in Figure P7.8, where è = 117° and F = 31.0 N.y | | ___| Unk Angle----> / |
1. 2 answers
2. 1,277 views
A basketball player makes a jump shot. The 0.700-kg ball is released at a height of 2.00 m above the floor with a speed of 7.70
1. 2 answers
2. 792 views
Calculate the weight of KHP that will react with 25mL of .1M NaOH
1. 2 answers
2. 948 views
Solve the inequality using a sign graph (test point method)x^3-x^2-4x+4<0
1. 1 answer
2. 389 views
In this sentence, "Yellowstone National Park is in Wyoming", is the word "in" the present tense verb?
1. 7 answers
2. 905 views
what is 12 to the 2nd power?
1. 2 answers
2. 913 views
How long will it take to earn $252 in interest if $1200 is invested at a 7% annual interest rate??
1. 2 answers
2. 1,387 views
Information about Ponhatons
1. 4 answers
2. 392 views
Hi, im doing a bible study and it tells mr to unscramble some names. Here are the questions... Towhat for men was Jesus taken to
1. 1 answer
2. 582 views
Who is assigned to take care of diplomacy?
1. 1 answer
2. 653 views
A vibrator moves one end of a rope up and down to generate a wave. The tension in the rope is 58 N. The frequency is then
1. 1 answer
2. 1,503 views
a 100 g iron bar at 100 C is placed in 200 g of water at 20 C. If specific heat of iron is 0.11 cal/G*c to what final
1. 1 answer
2. 859 views
a 100 g iron bar at 100 C is placed in 200 g of water at 20 C. If specific heat of iron is 0.11 cal/G*c to what final
1. 1 answer
2. 1,380 views
Need help...equivalent decimal for 214% =.214right? percentage 7 1/2% of 120 = 9% percent 15 is what percent of 75 = ?
1. 2 answers
2. 464 views
What dose 1/2 a page mean?Dose it mean 15 lines?
1. 2 answers
2. 488 views
What are dot arrays? What would a dot array for $1.84 look like?Thanks!
1. 1 answer
2. 529 views
Using a graph, what is the relationship between volume and height?
1. 2 answers
2. 662 views
The question I have is based on air having a density of 0.0013(g/mL).What is the mass of 550mL of air? How do I use the formula
1. 1 answer
2. 1,026 views
I have a couple of questions on anassignment, that I need help with. 1. Rebecca is painting on an easel. She paints a blue sun
1. 0 answers
2. 442 views
I have a question that I need help in answering.Miss Sanchez lives in Washington,D.C. She was planning fied trips for her
1. 0 answers
2. 497 views
When Amy's grandmother did die it wouldbe appropriate for her mother to: A. say,"Grandma was very sick but now she's gone. We
1. 0 answers
2. 552 views
I have this question on a homework assignment. Which of the followingmenus is best for preschoolers as outlined by the Food
1. 0 answers
2. 623 views

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