Ask a New Question

Questions and answers by

Liz

Questions (728)

1. A 15 kg boy falls out of his bed at a height of 0.50 m. What is the amount of gravitational potential energy lost by the boy?
1. 2 answers
2. 4,549 views
a child throws a ball in a net where it gets stuck. Does the motion of this ball defy the law of conservation of momentum?
1. 0 answers
2. 482 views
A 60.0 kg girl stands up on a stationary floating raft and decides to go into shore. She dives off the 180 kg floating raft with
1. 1 answer
2. 766 views
How would I answer number 3?1. A sumo wrestler originally jumps 10 cm above a trampoline but has the same total energy of a
1. 2 answers
2. 1,899 views
A sumo wrestler originally jumps 10 cm above a trampoline but has the same total energy of a small ball that was 200 cm higher
1. 1 answer
2. 922 views
Use g=10 N/kg in this assignment.1. What is the gravitational energy (relative to the unstretched surface of the trampoline) of
1. 2 answers
2. 3,536 views
Use g=10 N/kg in this assignment.1. What is the gravitational energy (relative to the unstretched surface of the trampoline) of
1. 1 answer
2. 706 views
fill in the blank ( Energy and momentum unit)1. the work done to stretch a spring is not equal to the to force multiplied by
1. 1 answer
2. 805 views
I am supposed to fill in the blanks without a word bank.1. I you push a crate with 40 N of force at an angle of 30 degrees and
1. 1 answer
2. 579 views
Which of the following is an inertial frame of reference?a) a child on a moving swing observes the child next to them moving in
1. 0 answers
2. 788 views
1. what happens to the force required for an object to maintain circular motion if the period is halved (goes twice as fast
1. 0 answers
2. 725 views
1. the applied force on a stationary object is less than the maximum force of static friction. Which of the statements are false
1. 1 answer
2. 621 views
In projectile motion, how would you find the final velocity of the object just before it hits the grounda) find the second
1. 1 answer
2. 941 views
how might life be different if static friction did not exist? give three examples and reference formulas to support your answers
1. 0 answers
2. 568 views
1. What happens to the force required for an object to maintain circular motion if the period is halved (goes around twice as
1. 0 answers
2. 598 views
1. A ball is launched from a cliff with an initial velcity of 10 m/s at an angle of 40 degrees above horizontal. If the ball
1. 1 answer
2. 515 views
how might life be different if static friction did not exist? give three examples and reference formulas to support your answers
1. 0 answers
2. 550 views
1. A ball is launched from a cliff with an initial velcity of 10 m/s at an angle of 40 degrees above horizontal. If the ball
1. 2 answers
2. 637 views
1. What happens to the force required for an object to maintain circular motion if the period is halved (goes around twice as
1. 0 answers
2. 721 views
A room is a square with integer dimensions. it is made 3 feet wider and 2 feet deeper. the increase in area is 46 square feed.
1. 1 answer
2. 567 views
What is the monomer and polymer structure of DNA?
1. 2 answers
2. 541 views
Consider the functionf (x) = 2x^3 - 3x^2 - 72x + 7 Find and classify the critical points. Identify the intervals of increase and
1. 1 answer
2. 1,650 views
what is the role of a commutator in a DC motor?
1. 2 answers
2. 570 views
The earth's magnetic fielda) is slightly off centre compared to the Earth's rotational axis of rotation b) has its magnetic
1. 2 answers
2. 1,416 views
The earth's magnetic fielda) is slightly off centre compared to the Earth's rotational axis of rotation b) has its magnetic
1. 0 answers
2. 729 views
I did an experiment where I had to measure how fast water flowed out of a container at different times and with different
1. 2 answers
2. 537 views
I have a data table and I graphed the data. I have to find the slope of a tangent at t=0. Would the slope just be zero?
1. 2 answers
2. 395 views
I did an experiment where I had to measure how fast water flowed out of a container at different times and with different
1. 1 answer
2. 696 views
A brand new stock is also called an initial public offering. This model predicts the percent overvaluation of a stock as
1. 1 answer
2. 574 views
Would the first derivative ofR(t)=9t[(t-4)^3/2.718] be R'(t)=3.311258278(3(t-4)^2(t)+(t-4)^3) and the second derivative be
1. 1 answer
2. 540 views
what is the difference between an average rate of water flow and an instantaneous rate of water flow?
1. 1 answer
2. 511 views
A brand new stock is also called an initial public offering. In this model, the period immediately after the stock is issued
1. 2 answers
2. 634 views
A brand new stock is also called an initial public offering. In this model, the period immediately after the stock is issued
1. 2 answers
2. 572 views
determine f" if f(x)=sqrt(x^3+2)
1. 1 answer
2. 354 views
If f(x1)>f(x2) for every x1>x2 then what is the behaviour of f(x)?
1. 1 answer
2. 412 views
If f(x1)>f(x2) for every x1>x2, then what is the behaviour of f(x)?I believe that the answer is that f(x) is increasing but I do
1. 1 answer
2. 414 views
A movie theater wants to determine the price per ticket that should be charged in order to maximize itsrevenue. The theater can
1. 1 answer
2. 1,383 views
5. A magnetic field map showsa. the direction of the magnetic field. b. a few representational field lines. c. relative strength
1. 0 answers
2. 1,633 views
1. For a bar magnet, the magnetic field lines pointa. towards the South pole. b. towards the North pole. c. always towards the
1. 1 answer
2. 1,451 views
1. A 40Ω , 20Ω and 60Ω resistor is connected in a parallel circuit.Which resistor would have the greatest current passing
1. 1 answer
2. 2,471 views
Does the crest of a wave usually have a larger amplitude than the trough?
1. 1 answer
2. 723 views
A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration?
1. 1 answer
2. 1,977 views
1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration?a) 0.05 mm b) 5.0 mm
1. 1 answer
2. 944 views
When a tuning fork of unknown frequency is sounded simultaneously with a 512 Hz tuning fork, 20 beats are heard in 4.0 seconds.
1. 2 answers
2. 1,336 views
1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration?a) 0.05 mm b) 5.0 mm
1. 0 answers
2. 586 views
1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration?a) 0.05 mm b) 5.0 mm
1. 0 answers
2. 601 views
1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration?my answer: I got 10
1. 1 answer
2. 1,112 views
1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration?my answer: I got 10
1. 0 answers
2. 708 views
1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration?my answer: I got 10
1. 0 answers
2. 707 views
A microscopic worm is eating its way around the inside of a spherical apple of radium 6 cm. What is the probability that the
1. 1 answer
2. 820 views
According to a publisher's records, 20% of the books published break even, 30% lose $1000, 25% lose $10,000, and 25% earn
1. 1 answer
2. 926 views
A bag of chocolate candies has the following colors: 5 yellow, 7 green, 8 red, 5 orange, and 4 brown. What is the probability of
1. 1 answer
2. 624 views
A police officer with good ears hears an approaching motorcycle. The engine sound he eats as the bike approached is 195 Hz.a) Is
1. 1 answer
2. 1,078 views
thanks in advanced!A guitar emits a 440 Hz tone. How far apart are the crests in room temperature air (20 degrees celsius)? How
1. 1 answer
2. 1,762 views
I would like to know if my answer is correct. Thanks in advanced!A person with their head sideways in the water sees a beaver
1. 1 answer
2. 2,064 views
I would like to know if my answer is correct. Thanks in advanced!A person with their head sideways in the water sees a beaver
1. 0 answers
2. 778 views
1. A person is listening to a new instrument capable of sounds ranging from 10 dB to 150 dB and with frequencies from 12 Hz to
1. 1 answer
2. 1,889 views
I am not too sure if my answers are correct. Here are the questions:1. A student standing near a brick wall claps her hands and
1. 3 answers
2. 2,902 views
1. In a standing wave, the medium at the tip of a loop isa) showing destructive interference b) not moving c) at the original
1. 4 answers
2. 3,005 views
1. In a standing wave, the medium at the tip of a loop isa) showing destructive interference b) not moving c) at the original
1. 0 answers
2. 1,088 views
I am stuck with both of these questions. Thanks in advanced!1. If one tone has a frequency of 110 Hz and another tone is played
1. 2 answers
2. 595 views
1. If a bat emits 10 sounds in 5 seconds, what is the frequency of the bat's vocal outbursts (rounded to first decimal place)My
1. 3 answers
2. 3,340 views
A 20.0 kg block is being pushed forward on a flat surface with a force of magnitude 45.0 N against a frictional force of 13.0 NT
1. 1 answer
2. 1,865 views
Your friend comes across a good deal to purchase a gold ring. She asks you for advice for you to test the ring. The ring has a
1. 2 answers
2. 1,381 views
how could you determine the efficiency with which the mechanical energy of a pendulum is conserved?
1. 0 answers
2. 484 views
If equal amounts of heat are added to equal masses of silver and copper, both at the same initial temperature, which will reach
1. 5 answers
2. 6,193 views
How would a $10.00 compact fluorescent light bulb (15 W) be an overall money saver compared to an incandescent light bulb (60 W)
1. 4 answers
2. 2,179 views
Which of the following samples has the highest specific heat capacity?a) A 100 kg sample of lead requires 13 000 J to increase
1. 2 answers
2. 2,344 views
How would a $10.00 compact fluorescent light bulb (15 W) be an overall money saver compared to an incandescent light bulb (60 W)
1. 0 answers
2. 739 views
Sodium metal adopts a body-centered cubic structure with a density of 0.97g/cm3. A. Use this information and Avogadro's number
1. 1 answer
2. 2,307 views
May you please edit this essay?Holden Caulfield in “Catcher in the Rye”, seems to be obsessed with mortality and youthful
1. 0 answers
2. 608 views
how to calculate the amount of heat in calories absorbed when 50.0 g of water at 20 degrees C spreads over your skin and warms
1. 1 answer
2. 1,379 views
A ball is fastened to one end of a 30cm string, and the other end is held fixed to a support. the ball whirls in a horizontal
1. 1 answer
2. 4,427 views
Solve dy/dx = y/(2y-x) using rational substitution (using v=y/x) with the initial condition y(0)=1.I solved this problem and
1. 1 answer
2. 869 views
I was wondering if my answers are correct.1. A 50kg person is taking a ride on an elevator travelling up at a steady speed of
1. 5 answers
2. 5,315 views
I was wondering if my answers are correct. Thanks in advance.1. A boy pushes down on a car rolling horizontally down the road.
1. 5 answers
2. 8,988 views
Write in parametric form the equation of the line that is perpendicular to r=(2i + 4j) + (i - 2j)t and goes through (1,0)
1. 2 answers
2. 643 views
write and row reduce the augmented matrix to find the general solution:2x - z = 2 6x + 5y + 3z = 7 2x - y = 4
1. 2 answers
2. 540 views
write and row reduce the augmented matrix to find the general solution:x - 2y + 13 = 0 y - 4x = 17
1. 1 answer
2. 529 views
on my exam review, i have this question for composition of functionsGiven f(x)=3x^2+x-1, g(x)=2cos(x), determine the values of x
1. 1 answer
2. 463 views
Determine the equation of g(x) that results from translating the function g(x)f(x)=x^2 +3 upward 10 units1) g(x)=(x+13)^2 2)
1. 1 answer
2. 492 views
three circles are manually tangent externally. their centers form a triangle whose sides are of length 8, 9, 13. find the total
1. 1 answer
2. 983 views
A test tube in a centrifuge is pivoted so that it swings out horizontally as the machine builds up speed. If the bottom of the
1. 0 answers
2. 601 views
A bicyclist traveling at 8 m/s rides around an unbanked curve. The coefficient of friction (is this static or kinetic friction?)
1. 0 answers
2. 883 views
what is the solution of 3x^+27=0
1. 2 answers
2. 278 views
prove or disprove cos(x-y)=cos(x)-cos(y)
1. 1 answer
2. 437 views
You place a mirror on the ground 6 feet from the lamppost. you move back 3 feet and see the top of the lamppost in the mirror.
1. 3 answers
2. 2,923 views
Legislation whose tangible benefits are targeted solely at a particular legislator's
1. 2 answers
2. 508 views
Estimate the area under the graph off(x)=sin(pix) from x=0 to x=1 using the areas of 3 rectangles of equal width, with heights
1. 1 answer
2. 794 views
Estimate the area under the graph off(x)=sin(pix) from x=0 to x=1 using the areas of 3 rectangles of equal width, with heights
1. 2 answers
2. 538 views
Estimate the area under the graph of f(x)= x^2 + 3 x from x=1 to x=10 using the areas of 3 rectangles of equal width, with
1. 1 answer
2. 893 views
Use Newton's method to approximate the positive value of x which satisfies x=2.3cosxLet x0=1 be the initial approximation. Find
1. 1 answer
2. 1,040 views
The manager of a large apartment complex knows from experience that 100 units will be occupied if the rent is 425 dollars per
1. 1 answer
2. 1,185 views
How do I work out:if life expectancy of male is 78.9 and female is 83.6. Life expectancy is % lower than female. What is formula
1. 1 answer
2. 386 views
A research balloon of total mass 225 kg is descending vertically with a downward acceleration of 1.4 m/s2. How much ballast must
1. 0 answers
2. 621 views
relative maxima and relative minima2x^2+ 4000/x +10
1. 1 answer
2. 537 views
-10 + 6g = 110
1. 1 answer
2. 244 views
In a vacuum, two particles have charges of q1 and q2, where q1 = +3.8C. They are separated by a distance of 0.37 m, and particle
1. 0 answers
2. 1,163 views
A tank is full of water. Find the work W required to pump the water out of the spout. (Use 9.8 for g and 3.14 for π. If you
1. 1 answer
2. 2,076 views
Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about x =
1. 0 answers
2. 704 views

Pages

1
2
3
4
5
6
7
8

Ask a New Question

Archives
Contact Us
Newest
Privacy Policy
Terms of Use
© 2025