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Sejul
Questions and answers by visitors named
Sejul
Questions (54)
A 20. kg block is placed at the top of a 10. meter-long inclined plane. The block starts from rest and slides without friction
4 answers
2,332 views
charging by induction
creates charge by transferring charges from one object to another OR separates charges within an object
1 answer
371 views
person weighs 526 N on Earth. Another planet has twice the mass of Earth and Twice the radius of Earth.
Find the weight on the
4 answers
1,594 views
Two girls each weight 500 N. Ride in a car traveling at 20.0 m/s. One wears a seat belt. The other does not. In an accident the
3 answers
451 views
a 2.5 kg rifle fires a 20 g bullet at 400 m/s. What is the magnitude of the recoil velocity of the rifle?
I still don't
2 answers
529 views
Through the process of doing work, energy can move between the external world and the system as the result of ____.
The sentence
2 answers
547 views
Through the process of doing work, energy can move between the external world and the system as the result of ____.
The sentence
3 answers
1,611 views
If a pointer on a spring scale moves 0.0254 m when a 2.224 N weight is fastened to the hook, the pointer will move how many m
2 answers
1,059 views
I need formula/problem set ups for the following 2 problems:
1)Find The work done by the force in pulling an object on an
2 answers
965 views
A 20. kg block is placed at the top of a 10. meter-long inclined plane. The block starts from rest and slides without friction
1 answer
617 views
in an experiment using Coulomb's apparatus, a sphere with a charge of 3.6 x 10^-8 C is 1.4 cm from a second sphere of unknown
3 answers
1,195 views
For which angles beta, with 0 degrees less than/equal to beta less than/equal to 180 degrees,
is sin 3beta equal to -1? a) 30
2 answers
536 views
an oil drop has a charge of 8.0 x 10^-19 C. How many excess electrons does the oil drop have?
3 answers
4,420 views
The difference in potential between any two points in a field is the ___ required to move a unit of whatever is affected by the
2 answers
555 views
German silver wire has a cross-sectional area of 2.047 x 10^-3 cm^2. How many meters are needed to make a resistance of 100
1 answer
461 views
I need to know the resistivity of german silver wire. I've looked at a few Google sources and I've seen several different
4 answers
1,089 views
I see 18% Nickel Alloy A (under pure silver) is listed as 2.874 x 10^-7
Is this what I should use?
1 answer
338 views
German silver wire has a cross-sectional area of 2.047 x 10^-3 cm^2. How many meters are needed to make a resistance of 100
3 answers
1,239 views
Electric power is found by multiplying ___ by current.
Is voltage or potential difference a better choice to use?
1 answer
435 views
Electric power is found by multiplying ___ by current.
Is voltage or potential difference a better choice to use?
1 answer
423 views
inserting a resistor in series with a combination of two or more resistors in parallel will ___ the voltage across the parallel
1 answer
363 views
if one resistor is removed from a parallel circuit, the total current will
1) decrease b) increase c) remain the same and the
4 answers
2,033 views
if one resistor is removed from a parallel circuit, the total current will
1) decrease b) increase c) remain the same and the
3 answers
3,530 views
if one resistor is removed from a parallel circuit, the total current will
1) decrease b) increase c) remain the same and the
2 answers
588 views
if one resistor is removed from a parallel circuit, the total current will
1) decrease b) increase c) remain the same and the
2 answers
758 views
An open box is to be constructed from a rectangular sheet of tin 3 meters wide by cutting out a 1-meter square from each corner
4 answers
1,538 views
Can you use algebra to find a quadratic equation if your know the coordinates of just ONE point on its graph?
Can you use algebra
3 answers
684 views
length of rectantular rug is 7/6 its width.
rug is placed on floor with 1 foot margin all around. area of floor is 4 times that
2 answers
598 views
radiators sell for $350. Let x be radiators. profit shown by equation
p= -.01x^2 +375x -600,000. What number of radiators will
1 answer
444 views
open top rectangular box made from 35 x 35 inch piece of sheet metal by cutting out equal size squares from the corners and
4 answers
775 views
For every point (x,y) on the graph
y = 30 - 5x^2, consider a rectangle with corners (-x, 0), (-x,y), (x,0), and (x,y). For which
1 answer
378 views
True or false:
2 ln x / ln 5 = ln x^2 - ln 5 for all positive values of x.
3 answers
436 views
solve 3^(2x+1) = 9^(2x-1)
using base 3 logs
1 answer
394 views
have 50 sq ft of material to make an open top box with a square base.
a) use formula for surface area to express the height h of
2 answers
1,094 views
In a circle with radius of 7 cm, an arc of the circle has length 22 cm.
The central angle theta is ??
2 answers
542 views
A man has 400 meters of fencing and wants to fence in a rectangular field next to a straight river. Assuming that no fencing is
2 answers
650 views
When a parachute opens, the air exerts a large drag force on it.This upward force is initially greater than the weight of the
3 answers
1,230 views
A 3.70kg box is sliding across the horizontal floor of an elevator.
The coefficient of kinetic friction between the box and the
2 answers
610 views
A 3.70kg box is sliding across the horizontal floor of an elevator.
The coefficient of kinetic friction between the box and the
3 answers
567 views
Soccer player kicks a ball down field. The ball's initial velocity is 30 m/s, 30 degrees above horizontal.
a) What is the ball's
4 answers
2,077 views
A projectile of mass 1.350 kg is shot straight up with an initial speed of 22.0 m/s.
(a) How high would it go if there were no
2 answers
559 views
a .20 kg ball on a string is whirled on vertical circle at constant speed. When the ball is at 3:00 position, tension is 16 N.
a)
3 answers
953 views
How many pounds of water are in a 36 ft diameter tank that is filled to a depth of 24 ft?
Thank you.
1 answer
388 views
A 10 lb. frozen boneless roast needs to be thawed and baked to a temperature of 200 degrees F.
The storage freezer maintains a
2 answers
702 views
Although I vaguely see DrBob222's concept, I still need some help in the set up. Thank you.
A 10 lb. frozen boneless roast needs
1 answer
447 views
Calculate the amount (g) of each of the following salts that need to be added to a 200 mL volumetric flask to produce a 2 M
3 answers
612 views
Calculate the amount (g) of each of the following salts that need to be added to a 200 mL volumetric flask to produce a 2 M
6 answers
625 views
The question states:
Plot the regression line from D = 40 to D = 300. My question: Do you extend the line beyond those 2 points
2 answers
512 views
The question states:
Plot the regression line from D = 40 to D = 300. My question: Do you extend the line beyond those 2 points
2 answers
499 views
random sample of 9600 students.
46% had at least one parent who was a college graduate. Estimate with 99% confidence the
1 answer
450 views
65 chemical engineering students are from urban/suburban backgrounds.
(Success is defined as a C or better in the course.) 52 of
1 answer
437 views
Find the moment of inertia of the following "L" shape about the x-x axis (I sub x)
The base of the L shape is 4 inches long and 2
1 answer
505 views
Grandpa places money in an account on your first birthday and will place that same amount in the account every year, ending with
2 answers
754 views
Mortgage company lets you pay a point (1% of total amount of loan)to reduce APR from 6.5% to 6.25% on a $400,000
30-yr mortgage
3 answers
678 views
