# Questions Asked onAugust 7, 2015

1. ## Physics

If a man weighs 900 N on the earth, what would he weigh on jupiter, where acceleration due to gravity is 25.9 m/s^2?

2. ## Math

Pairs of markings a set distance apart are made on highways so that police can detect drivers exceeding the speed limit. Over a fixed distance, the speed R varies inversely with the time T. For one particular pair of markings, R is 60 mph when T is 8

3. ## physics

A 1000 kg car can accelerate from rest to a speed of 25 m/s in 10 s. What average power must the engine of car produce in order to cause this acceleration? Neglect friction losses

4. ## Math

For a given interest rate, simple interest varies jointly as the principal and time. If $3000 left in an account for 6 years earned interest of$1260, then how much interest would be earned in 7 years?

5. ## physics

A gas at 250K and 15atm has a molar volume smaller than calculated from perfect gas law Calculate: a) the compression factor under these conditions b) the molar volume of gas

6. ## Math-manipulation of the formula

Make "i" the subject of the formula A=P(1+i)^n

7. ## physics

a bullet of mass 20g is fired into a block of wood of mass 400g . if the bullut and wood move together with speed of 20ms-1 calclate(i) speed with the bullet hits the wood ii the kinetic energy lost iii state the energy changes involed

8. ## Physics

A meter-long stick is balanced vertically on the ground. It is then made to fall with a gentle nudge. What is the speed of the end of the stick as it hits the floor? Assume the end on the floor does not slip. Treat the stick as a “thin rod.” Really

49. ## Sociology

Are theories necessary to explain research findings? My answer is yes.

50. ## Geometry

If two sides of a triangle are 3 cm and 5 cm in length, which could NOT be the measure of the third side? A) 2 cm B) 3 cm C) 4 cm D) 5 cm I thhink it's A

51. ## Physics

A spring streches by 3.90 cm when a 10g mass is hung from it. If a 25g mass attached to this spring oscillates in simple harmonic motion, calculate the period of the motion?

52. ## Chemistry

heating cyclopropane (C3H6) converts it to propane (CH2=CHCH3). The rate law is first order in cyclopopane. If the rate constant at a particular temp is 6.22x10^-4 s^1 and the concentration of cyclopropane is held at .0300 mol/L, what mass of propane is

53. ## Physic

so i need to calculate the moment of inertia of the pulley and the angular acceleration of the pulley. mass A = 9kg Mass B = 15kg Inner pulley= Mass 3kg R= 6cm Outerpulley= mass 7kg R=12cm it is a composite pulley with two masses hanging. Mass A on the

54. ## Chemistry

what information must you know to calculate the boiling point elevation of a solution of hexane in benzene. Is it the temp, Kb and the molality?

55. ## Chemistry

Radioactive decay is first order in the decaying isotope. For example, strontium-90 contained in fallout from nuclear explosions decays to yttrium-90 and a beta particle. Write the rate law for the decay of strontium-90. Can you please take me step by stem

56. ## Area

How many flowers can you plant in an area 19 square metres if each flower needs 0.04 square metres of space

57. ## algebra

Suppose Paul kicks a soccer ball straight up into the air with an initial velocity of 96 feet per second. The function f(x) = -16t2 + 96t gives the height, in feet, of the soccer ball after t seconds.Show all work to find the axis of symmetry

58. ## Chemistry

I'm having trouble understanding rate laws and manipulating them. So, for example, the rate law is rate= k[CO2][O3]. I was taught, maybe if I am just forgetting some pieces(been awhile), if I were to triple/double the partial pressure of CO2/O3, the rate

59. ## Scrambled Paragraph

Architects must consider many factors in designing a building. _1_ Q. Lighting is an essential aesthetic consideration in the design of a building's interior. _4_ R. It's source of daylight, high overhead and filtered through stained glass, creates

60. ## Math

To celebrate the first day of a leap year, I taught my dog to jump through a hoop. It was a Sunday. When he taught me the same trick the first day of the next year, it was a _?_ A) Sunday B) Monday C) Tuesday D) Wednesday Is it B?

61. ## Math

In right triangle ABC above, segment DE is drawn from side AB to AC as shown, forming right triangle ADE. If BC is 24, AB is 12, and BD is 4, what is the length of DE? A.18 B.16 C.15 D.12 E.8