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I`m solving waitplease help, can any anybody please show me how to solve part 1 in the image below?
Here yew gooooplease help, can any anybody please show me how to solve part 1 in the image below?
Full Question.thank youplease specify which part?
Sum of 7 numbers = 7*12=84Can someone please solve these questions with working (thanking you in advance)
1. The average of seven numbers is 12, and the average of three of them is –11. What is the sum of the other four numbers?
A 33 B 63 C 84 D 117
2. The price of a TV in 1970 increased by 300% in 1980. The price of the 1980 model TV increased by 200% in 1990. By what percentage did the price increase from 1970 to 1990?
A 500% B 600% C 900% D 1100%
June or October?Pls help on 2012 p3/33 q 10 this is my first question
thank you very muchHere yew goooo
Let's get weight of B shall we?View attachment 52123
WEIGHT OF B??? can someone explain by resolving forces on B on diagram ????????
u can attach a picture by clicking the option 'upload a file and open the pic from your libraryLet's get weight of B shall we?
First off, extend the arrow of the 18 N force on B, you will see that its angle between it and the horizontal is also 30!
We know B is in equilibrium also, so take axis directly on the smooth plane. Notice no friction here it's smooth.
R(->) resolve on x axis 18cos30= Wsin30
So W= 18root3= 31.18 N
Note I can draw it for you and attach the picture here but how do I do that?
Here you gou can attach a picture by clicking the option 'upload a file and open the pic from your library
Are you sure the ms says 0.1 m/s? Which paper is this?View attachment 52128
in part 1 i used v=u+at but the ans turned out to be wrong why??
i used vP= 1.3 +(0.1*20)=3.3m/s
ince vP=vQ so 3.3= vQ
thus, at t=20s 3.3= uQ+(0.016*20) uQ= 3.3-0.32=2.98m/s
Whereas, in markscheme the formula s=ut+1/2at^2 is used which gives the ans 0.1m/s
Can someone explain why cant we use v=u+at here???
tht was very neat .........thnk u so much ..Here you go
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