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Nilan
Questions and answers by visitors named
Nilan
Questions (29)
a 2575 kg van runs into the back of a 825 kg compact car at rest. They move off together at 8.5 m/s. Assuming no friction with
1 answer
954 views
the kilowatt-hour is a unit of:
force, work, power, or time?
1 answer
315 views
a spring with spring constant of 30 N/m is stretched 0.2 m from its equilibrium position.
How much work must be done tostretch it
3 answers
525 views
a bullet with a mass of 5 g and a speed of 600 m/s penetrates a tree to a depth of 4 cm. Assume that a constant frictional force
4 answers
735 views
a bullet with a mass of 5 g and a speed of 600 m/s penetrates a tree to a depth of 4 cm. Assume that a constant frictional force
4 answers
1,513 views
If an auto weighing 13,345 N causes a bridge to sag 0.0254 m, a truck weighing 26,690 N would cause the bridge to sag how many
1 answer
378 views
If an ammeter records 8 amperes and a voltmeter records 1.1 volts, the resistance of the conductor in the circuit is ___ ohms
3 answers
400 views
what current will flow through a resistance of 11 ohms when the emf impressed acrosss the resistance is 2.8 volts?
1 answer
323 views
Resistors of 30 ohms and 60 ohms are connected in parallel and joined in series to a 10 ohm resistor.
The circuit voltage is 180
3 answers
1,614 views
Produce a third degree polynomial that has exactly the roots -3 and 5 with y-intercept 1350.
I understand I could start with
2 answers
758 views
Produce a third degree polynomial that has exactly the roots -3 and 5 with y-intercept 1350.
I understand I could start with
2 answers
577 views
Use the equation y = ax^2 + bx + c where x is the horizontal distance a baseball has traveled and y is the height of the ball at
1 answer
417 views
Use the equation y = ax^2 + bx + c where x is the horizontal distance a baseball has traveled and y is the height of the ball at
1 answer
475 views
height of a projectile thrown straight up from top of 480 ft hill t seconds after bing thrown up with initial velocity vo ft/s
3 answers
789 views
Find all positive solutions to:
x^6 + 7x = 4x^4 - x^2 + 8
3 answers
528 views
If log (base b) 3 = 1.099 and
log (base b) 6 = 1.792, find log (base b) 18 = ???
4 answers
2,054 views
Let N(t) be number of bacteria after t days. N(t) = Pa^t for some constants P and a. N(2) = 5400 and N(6)=382,000.
a)before
1 answer
387 views
My question is how do I know that
N increases by a factor of 2.9 each day. (see below) Let N(t) be number of bacteria after t
2 answers
483 views
Two forces, F1 and F2, act on the 5.00 kg block shown in the drawing. The magnitudes of the forces are F1 = 69.0 N and F2 = 24.5
4 answers
1,846 views
Two forces, F1 and F2, act on the 5.00 kg block shown in the drawing. The magnitudes of the forces are F1 = 69.0 N and F2 = 24.5
1 answer
1,006 views
The graph shows position as a function of time for 2 trains running on parallel tracks.
The graph shows line A at a 45 degree
1 answer
1,241 views
A box is being with a velocity v by a force P (parallel to to v) along a level horizontal floor. the normal force is Fn, the
1 answer
408 views
In 9.7 s a fisherman winds 2.1 m of fishing line onto a reel whose radius is 30 cm (assumed to be constant as an approximation).
3 answers
1,066 views
In 9.7 s a fisherman winds 2.1 m of fishing line onto a reel whose radius is 30 cm (assumed to be constant as an approximation).
3 answers
649 views
Assume the earth is a uniform sphere and that its path around the sun is curcular.
Calculate the kinetic energy that the earth
2 answers
721 views
convert:
6000 kg to ___ tonnes (metric tons) 6000 kg to ___tons 1 acre-ft of water to ___gallons 32 psi to ___kpa 10 psfito ___
1 answer
376 views
Estimate the gallons of paint needed to cover the outside of a cylindrical silo which is 30 feet in diameter and 70 feet high.
Do
3 answers
748 views
What is the rotational speed (rpm) of the 64 in diameter rear tires of a tractor traveling at 6.5 mph if there is no slippage?
Ho
1 answer
341 views
The dissolved Ca++ concentration in a river is approximately 30 mg/L.
This concentration is equivalent to ___ ppm or ___ mol/L,
4 answers
1,211 views
Answers (7)
how do you convert mg to moles?
I forgot to mention that I got 6.417E29 for part A and 2.688E34 for part B. Both answers were wrong. Please help. Thank you.
I'm still confused. to find angular speed = tnngenital speed/radius, would the radii cancel out, leaving only the tangential speed? still confused as to set up
Force 1 is pushing on the top left corner of the box. The arrow forms a 65 degree angle with the verticle (as if the box were extended straight left, from 9:00 to the arrow = 65 degrees) I found F1 horizontal component to be 69 cos 65 = 29.16 N F2 is
I won't have access to this on a test. How can I work it on a calculator.
Thank you
So F = 22500 Am I right in thinking it is POSITIVE?
