OHara
This page lists questions and answers that were posted by visitors named OHara.
Questions
The following questions were asked by visitors named OHara.
A car of mass 1200kg accelerates from rest at a rate of 2m/s^-2. Calculate how long it should take to reach a velocity of 50m/s.
12 years ago
Find the quotient and the remainder in the following. a). x^4 + 3x^3 + 5x^2 - 6x - 8 is divided by x + 2 b). 2x^4 - 3x^3 + 6x^2 - 5x - 4 is divided by 2x - 3 Please help, this is urgent. Thanks.
12 years ago
Find the quotient and remainder in the following: a) x^4 +3x^3 + 5x^2 - 6x - 8 is divided by x + 2
12 years ago
Factorise (x - 1)^2 - 4y^2
12 years ago
A force of 2000N acts on an area of 4m^2, what is the pressure? What would be the pressure if the same force acted on half the area?
12 years ago
A block measuring 0.1m x 0.4m x 1.5m has a mass of 30kg. Calculate the pressure in each position and state in which position will the block produce greatest and least pressure on the ground.
12 years ago
A student of mass 75kg stands in a lift, what is the normal reaction force(upward force) on him when the lift is accelerating: a). Upwards at 0.65m/s^2 ? b). Downwards at 0.65m/s^2 ?
12 years ago
A car of mass 550kg accelerates steadily from rest to 25m/s in 30s. a). What is its acceleration? b). What resultant force produces this acceleration? c). The actual force will be greater, why?
12 years ago
How is dust in operating theatres controlled?
11 years ago
Answers
The following answers were posted by visitors named OHara.
Thanks Henry.
12 years ago
Charles law can be written as: V1/T1 = V2/T2 (at constant pressure)
12 years ago
Thanks mate.
12 years ago
Thanks kuai.
12 years ago
Thanks guys:)
12 years ago
I think I have a little idea on Q.a) only. F = ma = 550 x 25 =13750N so acceleration is a = v - u/t =25 - 0/30 =0.83 ms^-2 that's all i know. I don't know about Q.b and Q.c.
12 years ago