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Alfred

Questions (36)

Islamic civilization was
1. 1 answer
2. 123 views
Shelly has a roll of fabric and decides to make some scarves for her friends.The roll contains 6 2 3 yards of fabric. She needs
1. 1 answer
2. 391 views
public class Quiz_2DArray {public static String listToString(int[] list) { String s = ""; for (int n : list) { s = s +
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2. 349 views
Which system(s) of the body are mainly involved in the fighting off of infection? A) Digestive System B) Cardiovascular C)
1. 1 answer
2. 338 views
A boy is standing 120 meters from a point on the ground where a balloon is released vertically upwards at a rate of 3 meters per
1. 1 answer
2. 300 views
Find the equation of a TANGENT line & NORMAL line to the curve of x^2+y^2=20such that the tangent line is parallel to the line
1. 1 answer
2. 608 views
A boy is standing 120 meters from a point on the ground where a balloon is released vertically upwards at a rate of 3 meters per
1. 1 answer
2. 283 views
A tank of water in the shape of a cone is being filled with water at a rate of 12 m^3/sec. The base radius of the tank is 26
1. 1 answer
2. 6,069 views
(x+1)^2-6=ySolve for x and y should be part of the final answer
1. 2 answers
2. 367 views
The 4th term of an arithmetic progression AP is 37 and the 6th term is 12 more than the 4th term find. (i)the first term of AP.
1. 2 answers
2. 1,175 views
Does anyone have a giant list of WebAssign Physics1 work with the questions?
1. 1 answer
2. 319 views
Mark his a $10 bill inside his favorite book. He forgot the pages where he hid it. If the sum of pages where the bill is hidden
1. 2 answers
2. 455 views
An aeroplane flies horizontally at 80m/s in still air. If the aviator wishes to fly due south and the wind is blowing from the
1. 1 answer
2. 684 views
What is the difference in meaning between the following pairs of sentences? 1. I was a teacher. 2 I am a teacher
1. 2 answers
2. 1,913 views
A jug can hold 3 times as much juice as a mug if the jug can hold 2 L of juice how much juice in liters can the mug hold
1. 1 answer
2. 814 views
one-half a number minus 6 is 4. find the number
1. 2 answers
2. 434 views
Identical squares are cut off from each corner of a rectangular piece of cardboard measuring 7cm by 12cm. The sides are then
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2. 906 views
What are welfare payments or consumer subsidies?
1. 2 answers
2. 491 views
An oval track is made by erecting semi circles on each end of a 58 m by 116 m rectangle. Find the length of the track and the
1. 2 answers
2. 1,409 views
I've been stuck on a problem with my homework for a couple of minutes now. We are doing Systems of Two Equations, using the
1. 1 answer
2. 633 views
Compare and contrast the following methods of job evaluation, and include examples that are not the same as in the textbook to
1. 0 answers
2. 467 views
A girl of 50 kg slides down a 8 m long slide into a pool. The upper end of the slide is 4.0 m above the water and the lower end
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2. 538 views
A golfer drives a golf ball with a velocity of 100 ft/sec and an angle of 45 degrees. A. find the time of travel for the ball.
1. 1 answer
2. 501 views
How do i graph this hyperbola?X^2+6x-3y^2=0
1. 2 answers
2. 1,040 views
Ag(s) + Cl2(g) --> 2AgCl(s)∆H and ∆S are 254.14kJ and –115.0J/K respectively. Calculate equilibrium constant, K for the
1. 1 answer
2. 488 views
Ag(s) + Cl2(g) --> 2AgCl(s)∆H and ∆S are 254.14kJ and –115.0J/K respectively. Calculate equilibrium constant, K for the
1. 1 answer
2. 599 views
1.6 mol of Neon gas are heated from 20.0 °C to 85.2 °C at a constant pressure of 1 atm. Calculatethe work done. (R = 0.082057
1. 3 answers
2. 878 views
A fountain has a cylinder with holes placed on the side at heights of 1 m and 2 m. The water level is the cylinder is kept at a
1. 0 answers
2. 508 views
Process of eliminiation method ? Is there a solution, infinity or no solution. I don't get it. Can anyone help me?3r - 5s = -27
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2. 369 views
1. What is the weight of a 24kg mass on Mars if its surface gravitaional field = 3.5N/KG?a) 235.2 N b) 84 N c) 24 kg d) 6.86 kg
1. 1 answer
2. 895 views
(a) Identify the significance of scientists James Clerk in hertz’s research.(b) Explain the physics of why hertz was able to
1. 1 answer
2. 875 views
Explain how a galvanometer functions, using electromagnetic principles.
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2. 378 views
A dc electric motor found in the lab was being examined by a student. It was connected to a power supply and it was not attached
1. 2 answers
2. 648 views
A very important experiment was carried out at the end of the 1800’s involving testing for the speed of the earth through the
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2. 627 views
A student spins a 1.2kg rock around above her head horizontally in an experiment which aims to model how satellites orbit the
1. 1 answer
2. 492 views
(A) Identify how the gravitational potential energy changes as a shuttle takes off from the launch pad.(b) Explain the
1. 1 answer
2. 561 views

Answers (19)

Can't find the work done by gravity
Yes
I want answer your
Percentage by mass of x in X2CO3.10H2O
Hello boss
Can someone answer
Calculation
Please explain this question diagramatically.
1 is the answer
from energy= 1/2mv^2. =1/2×0.5×3^2 =2.25 but work done=force applied then force=2.25 recall f=ma =0.5×10 5N so. coefficient=kinetic frictions limiting friction 2.25÷5=0.45 coefficient of kinetic friction =0.45
inverse sin--> = Sin^-1(1.46-1.48)= 80.57 deg 90-80.57 = The Max_ang = 9.43 deg
t= √ 2y/g = √2(10m)/9.8m/s^2 = √2(10)/9.8 = 3.19 s d= 3.19s(100) = 319.4 = 319m
Let 23=x 408=y N= final answer then âˆš(23+âˆš408) - âˆš(23-âˆš408) becomes âˆš(x+âˆšy) - âˆš(x-âˆšy) Equating it to N âˆš(x+âˆšy) - âˆš(x-âˆšy)=N Solving this, N²= 2x-2âˆš(x²-y) Subsituting x=23 and y=408
215
42
so the formula is W = nR∆T Thank you for the answer above:)
a.10
51...
Does the density of air change when it is heated in a closed container?

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