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Tammy
Questions (468)
The sum of 2 vectors is the smallest when the angle between them is :
a) 0 b) 45 c) 90 d) 180 d) i believe is the correct answer
1 answer
1,101 views
Which of the following is an accurate statement?
a) a vector cannot have zero magnitude if one of its components is not zero b)
1 answer
1,326 views
A car starts from rest and undergoes uniform acceleration. During the first second it travels 6 m.
a) what is the car's
1 answer
679 views
A car starts from rest and accelerates at 5 m/s^2 for 4 s, then maintains that velocity for 3 seconds, then decelerates at the
1 answer
1,506 views
You are driving home on a weekend from school at 65mph for 130 miles. It then starts to snow and you slow to 45 mph. You arrive
1 answer
751 views
A car with good tires on a dry road can decelerate at about 5 m/s^2 when breaking. Suppose a car is initially traveling at 65
1 answer
577 views
You are driving home on a weekend from school at 65mph for 130 miles. It then starts to snow and you slow to 45 mph. You arrive
1 answer
743 views
A car starts from rest and accelerates at 5 m/s^2 for 4 s, then maintains that velocity for 3 seconds, then decelerates at the
1 answer
1,069 views
A car starts from rest and undergoes uniform acceleration. During the first second it travels 6 m.
a) what is the car's
1 answer
589 views
If you are driving at 65mph along a straight road and you look to the side for 2 seconds, how far do you travel during this
1 answer
527 views
Suppose that an object travels from one point in space to another. Make a comparison between the displacement and the distance
1 answer
2,518 views
When is the average velocity of an object equal to the instantaneous velocity?
a) always b)never c) only when velocity is
1 answer
3,288 views
a car manufacture advertise that a car goes "from zero to sixty in 8 seconds" is a description of:
a) average speed b)
2 answers
676 views
Object A and B both start at rest. They both accelerate at the same rate. However , object A accelerates for twice the time as
2 answers
2,553 views
a car manufacture advertise that a car goes "from zero to sixty in 8 seconds" is a description of:
a) average speed b)
1 answer
491 views
When is the average velocity of an object equal to the instantaneous velocity?
a) always b)never c) only when velocity is
0 answers
693 views
Suppose that an object travels from one point in space to another. Make a comparison between the displacement and the distance
0 answers
1,425 views
An average human heart rate is 70 beats per minute. How many times it beats over 70 year lifetime? use scientific notation.
365 =
2 answers
1,313 views
Write the statement using absolute value notaion:
The distance between x and 1 is 7. I got the answer as the absolute value of x,
1 answer
529 views
How many cubic millimeters are there in one square centimeter?
I know that in one square centimeter there is 100 millimeters
1 answer
455 views
I think that the goal is to get rid of the 5th root in this case. I know that I have to make whatever is under or in the root
0 answers
1,302 views
Please read and then help me!
(x^(-3/5)) ----------- divide x ^ (1/5) I know the problem then needs to look like this:
0 answers
1,087 views
Electronics
The electrical resistance (r) of a cable varies directly (y=kx) as its length (l) and inversely (y= k/x) as the
0 answers
597 views
Simplify [(1)-(1/x+2)] / [(1)- (3/x+4)]
I know I need to find the LMC here, and the answer is (x+4)/(x+2) but I do not know how
0 answers
394 views
Solve Q=(n-s)/n for n
To get you started, multiply both sides by n and go from there. Post your work if you get stuck AND tell us
0 answers
455 views
(3x+4)/(3x-4)+(3x-4)/(3x+4)
--------------------------- Divide top by bottom (3x-4)/(3x+4)-(3x+4)/(3x-4) Very Big Problem and
0 answers
462 views
describe an application for the use of ratios or portions. And describe how an application problem could be useful in daily
0 answers
472 views
I need help with finding a potential market and product to get my export operations started. I need a 15to20 PowerPoint
0 answers
1,019 views
The solubility of KCLO3 at 25 degree celcius is 10.9 per 100.g of h20.
question: If 15 g are addded to 100 g of water at 25
0 answers
832 views
First I would find the first derivative which is the slope and then would I
plug in the given value into the original equation to
0 answers
541 views
intergral of (x^3 -4x + 3)/(2x) dx
would this be ln abs(x^3-4x+3) + C? I don't really understand how to solve this problem. d/dx
0 answers
1,212 views
Find the derivative of
a) y=cos (x/2) b) yx-3x^2 +6 = y^4 + x a) -sin (x/2)(2+x)/2^2 -sin(x/2)(x/2) b) x dy/dx + y - 6x = 4y^3
0 answers
566 views
For the universal set U= {0,1,2,3,4,5,6,7}
And the sets A={1,5}, B={1,2,3,4} And C= {4, 6} lists the elements in the following
0 answers
500 views
I need help with slopes and lines.
Determine the slope of each line a line through points (-1, 2) and (2, -7) Slope of a line
0 answers
553 views
A force F is exerted by a broom handle on the head of the broom, which is of mass m. The handle is at angle theda to the
2 answers
2,972 views
When a block slides a certain distance down an incline the work done by gravity is 300 J. What is the work done by gravity if
4 answers
9,620 views
A ball is tossed straight up from the surface of a small spherical asteroid with no atmosphere. The ball goes to a height ewual
1 answer
3,562 views
A spring has a force constant of 100N/m and an unstretched lenght of .07 m. One end is attached to a post that is free to rotate
1 answer
1,623 views
A wheel with rotational inertia I is mounted on a fixed, fricitonless axle. The angular speed w of the wheel is inccreased from
11 answers
18,225 views
When a block slides a certain distance down an incline the work done by gravity is 300 J. What is the work done by gravity if
1 answer
1,592 views
To streatch a certain nonlinear spring by an amount 2x requires a force F given by F=40x-6x^2 where F is in newtons and x is in
0 answers
1,130 views
A target lies flat on the ground 3m from the side of a building which is 10m tall. A student rolls a ball off the horicontal
1 answer
1,688 views
The velocity of a projectile at launch has a horizontal component v_h and a vertical component V_V. Air resistence is
0 answers
634 views
An ideal massless spring is fixed to the wall at one end. A block of mass M attached to the other end of the spring oscillates
1 answer
14,214 views
A spring has a force constant of 100N/m and an unstretched lenght of .07 m. One end is attached to a post that is free to rotate
5 answers
15,383 views
A ball is tossed straight up from the surface of a small spherical asteroid with no atmosphere. The ball goes to a height ewual
1 answer
1,044 views
The position of a toy locomotive mobing on a straight track along the x-axis is given the equation x=t^3-6t^2 +9t where x is in
1 answer
655 views
After a completely inelastic collision two objects of the same mass and the same initial speed are found to move away together
0 answers
743 views
A 50g mass (M1) will be attached to the trolley M2) and will cause it to accelerate a distance of between .5 to .6m. You also
0 answers
660 views
Would you say Steinbeck uses indirect or direct characterization of the characters? I think it's direct. For example he says,
0 answers
629 views
Trolley B will be at rest and trolley A will be given a push such that it collides with B, and they both move as one mass after
0 answers
598 views
A railroad flatcar of weight W can roll without friction along astraight horizontal track. Initially, a man of weight w is
1 answer
2,109 views
A rocket whish is in deep space and initially at rest relative to an inertial reference frame, has a mass of 2.55 X 10^5 kg of
1 answer
1,467 views
A 6090kg space probe mobing nose-first toward Jupiter at 105m/s relative to the Sun, fires its rocket engine ejecting 80 kg of
1 answer
2,069 views
A .30kg softball had a velocity of 15m/s at an angle of 35 degrees below the horizontal just before making contact with the bat.
0 answers
873 views
A concluding strategy which helps to promote unity within a speech is
a)a summary of main points b)a rhetorical question c)a
0 answers
530 views
A .30kg softball had a velocity of 15m/s at an angle of 35 degrees below the horizontal just before making contact with the bat.
0 answers
868 views
Does increasing the frequency of a wave also increase its wavelength? If not, how are these quantities related?
high frequency.
0 answers
694 views
A golf ball and a ping-pong ball are dropped in a vacuum chamber. When they have fallen halfway down, they have the same...
1 answer
2,998 views
How much work is needed to raise a 110-kg load of bricks 12 m above the ground to being under construction?
work in joules=
0 answers
633 views
i see were u got that from but this 1 is confusing.
6 (index 3) square root of 36 times 2 (index 3)square root of 6 Please use
0 answers
1,287 views
Hi i was wondering what the square root of 3 times the squareroot of 9 is with little 3's on on the outside of the square roots
0 answers
553 views
DNA was collected from 100 people and subjected to a restriction digest with BamHI. These samples were then analyzed using
0 answers
735 views
if the incidence of cystic fibrosis is 1 in 2500, what is the expected frequency of carriers for the CF allels? assume that this
0 answers
941 views
Can someone explain how the DNA vaccine differ from a traditional vaccine?
Since this is not my area of expertise, I searched
0 answers
609 views
Can someone explain how the DNA vaccine differ from a traditional vaccine?
0 answers
456 views
Why are enzymes needed by the cell?
en.wikipedia. org/wiki/Enzyme
0 answers
435 views
Sometimes, certain enzymes are associated with a particular organelle of the cell. Many times scientists have had to use
0 answers
621 views
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