# Tyler

Popular questions and responses by Tyler
1. ## physics

An apple crate with a weight of 225 N accelerates along a frictionless surface as the crate is pulled with a force of 14.5 N as shown in the drawing. What is the horizontal acceleration of the crate?

2. ## physics

A car, starting from rest, accelerates in the +x direction as in the figure. It has a mass of 1.10 × 103 kg and maintains an acceleration of +4.40 m/s2 for 2.60 s. Assume that a single horizontal force (not shown) accelerates the vehicle. Determine the

3. ## Science

A girl standing on a bridge throws a stone vertically downward with an intial velocity of 15.0 m/s into the river below. If the stone hit's the water 2.00 seconds later what is the height of the bridge above the water?

4. ## Calculus

Use geometry to evaluate the integral from negative 3 to 3 of f of x, dx for f of x equals the square root of the quantity 4 minus the square of the quantity x plus 1 for x is between negative 3 and 1 including negative 3 and 1, and equals the absolute

5. ## physics

The drawing shows three objects rotating about a vertical axis. The mass of each object is given in terms of m0, and its perpendicular distance from the axis is specified in terms of r0. Rank the three objects according to their moments of inertia, largest

6. ## physics

A high-jumper, having just cleared the bar, lands on an air mattress and comes to rest. Had she landed directly on the hard ground, her stopping time would have been much shorter. Using the impulse-momentum theorem as your guide, determine which one of the

31. ## physics

A force of 0.053 N is required to move a charge of 36 µ a distance of 30 cm in a uniform electric field. What is the size of the electric potential difference between the two points?

32. ## Math

There are 5 red marbles, 8 blue marbles, and 12 green marbles in a bag. What is the theoretical probability of randomly drawing a red marble and then a green marble? 10%

33. ## physics

Two arrows are fired simultaneously with the same speed of 30.0 m/s. Each arrow has a mass of 0.100 kg. One is fired due east and the other due south. What is the magnitude of the total momentum of this two-arrow system?

34. ## Math

x^(log10x)=100 I'm not sure how to do this at all...

35. ## Chemistry

Calculate ΔH∘f (in kilojoules per mole) for benzene, C6H6, from the following data: 2C6H6(l)+15O2(g)→12CO2(g)+6H2O(l) ΔH∘ = -6534kJ ΔH∘f (CO2) = -393.5kJ/mol ΔH∘f (H2O) = - 285.8kJ/mol

36. ## Chemistry

Assuming that the specific heat of the solution is 4.18 J/(g⋅∘C) and that the calorimeter itself absorbs a negligible amount of heat, calculate ΔH in kilojoules for the reaction CaO(s)+H2O(l)→Ca(OH)2(aq) When 1.045 g of CaO is added to 50.0 mL of

37. ## Chemistry

1) A dog has the same mass for 3 years. State whether this represents an equilibrium or steady state situations, and give your reasons. I'm not sure if I got this question right... I think this is a steady state because the dog is opened to the environment

38. ## chemistry

in the reaction of magnesium metal with hydrochloric acid to produce magnesium chloride and hydrogen gas. If 4.59 mol of magnesium and 4.59 mol of hydrochloric acid are reacted, how many moles of magnesium chloride are produced ?

39. ## Calc

Oscar Corporation is planning to construct an elliptical gate at its headquarters. The width of the ellipse will be 5 feet across and its maximum height along the center will be 3 feet. The company wants to place two bright spots at the foci of the

40. ## Chemistry

1. Pentane gas (C5H12) combusts with oxygen gas (O2) to form water (H2O) and carbon dioxide (CO2). Write a balanced chemical equation for this reaction and explain the scientific principle (statement) that requires the balancing of an equation to make it

41. ## Physics

A photocell shows photoelectric effect when green light shines on it. Which of the following is correct if a green light is replaced by a blue light? Electron emission would get stopped. Electrons are emitted with more velocity. Electrons are emitted with

42. ## geometry

An architect needs to design a rectangular room with an area of 75 ft What dimensions should he use in order to minimize the perimeter? Round to the nearest hundredth, if necessary

43. ## Calculus

The demand function for a product is modeled by : p=10,000(1-(3/3+e^-0.001x) Find the price of the product if the quantity demanded is (a) x=1000 units and (b) x=1500 units. What is the limit of the price as x increases without bound?

44. ## Chemistry

What mass of CO2 could be absorbed by 1.34 g of CaO?

45. ## phys

When a car is weighed, it is allowed to move over a scale which records a reading as the front wheels go over the scale, and a second reading when the rear wheels go over the scale. The weight of the car is equal to A) the weight under the front wheels. B)

46. ## Science

The increase in use of electricity and oil as well as the as the expectation that dependency on foreign oil will (blank)over the next ten years has lead to the restructuring of current energy policies A)double B)triple C)decrease D)stay the same

47. ## math

The circumference of a circular garden is 65.94 feet. What is the diameter of the garden? Use 13.4 for and do not round your answer.

48. ## physics

The table that follows lists four pairs of initial and final angles of a wheel on a moving car. The elapsed time for each pair of angles is 1.5 s. For each of the four pairs, determine the average angular velocity (magnitude and direction as given by the

49. ## physics

In a science fiction novel two enemies, Bonzo and Ender, are fighting in outer spce. From stationary positions, they push against each other. Bonzo flies off with a velocity of +1.7 m/s, while Ender recoils with a velocity of -3.3 m/s. Determine the ratio

50. ## physics

Three forces act on a moving object. One force has a magnitude of 76.5 N and is directed due north. Another has a magnitude of 46.3 N and is directed due west. What must be (a) the magnitude and (b) the direction of the third force, such that the object

51. ## Chemistry

Water drips from a faucet into a flask at the rate of two drops every 5 seconds. A milliter of water is 20 drops. What volume of water, in liters, will be collected in 2.5 hours.

52. ## Statistics

Find the critical value za/2 that corresponds to a=0.12.

53. ## Chemistry

I need chemistry help. I think 1. c, 2.b, & 3.a (please tell me why or why not and help me set up the problems if possible) 1.) The following half reaction has been balanced except for the electrons. How many and where should the electrons be included? 14

Simplify and write the trigonometric expression in terms of sine and cosine: ((2+tan^2 x)(sec^2 x))-1 = (f(x))^2 f(x)= ???

55. ## math

How does a Hawaiian Baritone laugh?

56. ## Calculate the oscillation frequency f of the H2 mo

When displaced from equilibrium by a small amount, the two hydrogen atoms in an \rm H_{2} molecule are acted on by a restoring force F_{x}=-k_1 x with k_1 = 510 N/m. Calculate the oscillation frequency f of the H2 molecule. Use m_eff = m/2 as the

57. ## PHYSICS

A concert loudspeaker suspended high off the ground emits 35 W of sound power. A small microphone with a 1.0 cm2 area is 50 m from the speaker. (a) What is the sound intensity at the position of the microphone? (b) How much sound energy impinges on the

58. ## physics

A mountain climber, in the process of crossing between two cliffs by a rope, pauses to rest. She weighs 520 N. As the drawing shows, she is closer to the left cliff than to the right cliff, with the result that the tensions in the left and right sides of

59. ## calculous (check)

If air resistance is neglected, a falling object travels 13 ft during the first second, 39 ft during the next, 65 ft during the next, and so on. These distances form the arithmetic sequence 13, 39, 65, ... .In this sequence, a(subscript)1 = 13 d equals 26.

60. ## Chemistry ASAP

Using a table of standard electrode potentials (such as the one in your textbook), calculate the standard cell potential for a cell made by placing a zinc electrode in a Zn2+(aq) solution which is connected by an electrolyte to a Ag+ (aq) solution

61. ## Pre-Algebra

The treasurer of the student body at a college reported that the receipts from a recent contact totaled $916; Furthermore, he announced that 560 people had attended the concert. Students were charged$1.25 each for admission to the concert, and adults were

62. ## chemistry

Calculate the number of hydrogen molecules formed when 5.6 mL of ammonia at STP is decomposed by the following reaction: ___NH3 „³ ___ N2 + ___ H2

63. ## chemistry

determine the mass of CO2 produced when 51.2 g of CaO is reacted with 50.0 g of C according to the unbalanced equation CaO + C --------CaC2 =CO2

64. ## physics

a mechanic uses a chain and bloc pulley to lift a 875-kg engine 4.0 m to the top of the garage. the downward force on the chain over the 4.0 m distance is 5.0 x 10^4 N. a)calculate the work done in raseing the motor b)how much useful work was done c)what

65. ## science

When scientists use one of their five senses to gather information, they are?

82. ## physics

Accomplished silver workers in India can pound silver into incredibly thin sheets, as thin as 3.00 x 10-7 m (about one hundredth of the thickness of a sheet of paper). Find the area of such a sheet that can be formed from 3.70 kg of silver.

83. ## physics

The drawing shows two blocks that are placed at the ends of a massless board. The board is balanced on a support that serves as an axis of rotation. The block on the left has a mass of 5.8 kg. What is the moment of inertia of this system about the axis of

84. ## physics

An auto race takes place on a circular track. A car completes one lap in a time of 22.8 s, with an average tangential speed of 37.3 m/s. Find (a) the average angular speed and (b) the radius of the track.

85. ## physics

A meter stick is rotated about the end labeled 0.00 cm, so that the other end of the stick moves through an arc length of 6.04 cm. Through what arc length s does the 25.0-cm mark on the stick move?

86. ## physics

A centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. Such a device is used in medical laboratories, for instance, to cause the more dense red blood cells to settle through the less dense blood serum

87. ## physics

There is a clever kitchen gadget for drying lettuce leaves after you wash them. It consists of a cylindrical container mounted so that it can be rotated about its axis by turning a hand crank. The outer wall of the cylinder is perforated with small holes.

88. ## physics

A 3.67-g bullet, traveling at a speed of 484 m/s, strikes the wooden block of a ballistic pendulum, such as that in Figure 7.14. The block has a mass of 186 g. (a) Find the speed of the bullet/block combination immediately after the collision. (b) How high

89. ## physics

The drawing shows three particles that are moving with different velocities. Two of the particles have mass m, and the third has a mass 2m. The third particle has a velocity of v3 = +5.1 m/s. At the instant shown, the center of mass (cm) of the three

90. ## physics

Four very thin rods, each 13 m long, are joined to form a square, as part (a) of the drawing shows. The center of mass of the square is located at the coordinate origin. The rod on the right is then removed, as shown in part (b) of the drawing. What are

91. ## physics

A 2.9-kg cart is rolling along a frictionless, horizontal track towards a 1.5-kg cart that is held initially at rest. The carts are loaded with strong magnets that cause them to attract one another. Thus, the speed of each cart increases. At a certain

92. ## physics

A 53.8-kg skater is standing at rest in front of a wall. By pushing against the wall she propels herself backward with a velocity of -1.33 m/s. Her hands are in contact with the wall for 0.960 s. Ignore friction and wind resistance. Find the average force

93. ## physics

The hail comes straight down at a mass rate of m/Δt=0.0690 kg/s and an initial velocity of v0= -15.0 m/s. Suppose that the hail described there bounces off the roof of the car with a velocity of +14.0 m/s. Ignoring the weight of the hailstones, calculate

94. ## physics

Only two forces act on an object (mass=3.19 kg), as in the drawing. Find (a) the magnitude and (b) the direction (relative to the x axis) of the acceleration of the object.

95. ## math

The length of a rectangle is 7 units and its width is 5 units. What is the approximate length of the diagonal of the rectangle? A. 4.9 units B. 6 units C. 8.6 units D. 9 units

96. ## Physics

The 500 kg video display will be raised to its position 20 m above the arena floor by a motorized winch powered by a 12 volt battery. If the battery capacity is 100 A-hr and the system is 100% efficient, how many times could the display be lifted into

97. ## Calculus

Find an equation of the tangent line to the graph of f at the given point. f(x) = x + (4/x), (4,5) I tried using the limit process a lot, but it didn't quite work. If possible, please use the limit process. Thanks a lot to whoever answers this question.

98. ## Geometry

Triangle ABC is given by the points A(1,1), B(3,2), C(2,3). Consider each rule of transformation. Does the rule result in an image with points A'(2,2), B'(6,3), and C'(4,4). (x,y) transforms into (x,y+1) y/n (x,y) transforms into (2x,2y) y/n (x,y)

99. ## math

Four friends shared a candy bar. The first friend ate 1/4 of the candy bar, the second friend ate 1/3 of the candy bar, and the third friend ate 1/6 of the candy bar. How much of the candy bar did the fourth friend eat? (Leave your answer as a fraction in

100. ## Chemistry<--------

Sulfur dioxide in the effluent gases from coal-burning electric power plants is one of the principal causes of acid rain. One method for reducing SO2 emissions involves partial reduction ofSO2 to H2S followed by catalytic conversion of the H2S and the