# Posts by Khalifa

Total # Posts: 6

**Math**

30 red socks, 22 gold socks and 14 black socks. How many socks would he have to pick up before getting a matching pair?

**Physics**

Thomas the train and Diesel are involved in an elastic collision. A 2.5 kg Thomas is, at rest but is approached head-on by a 5.0 kg Diesel moving at 0.60 m/s. The force-separation graph for the ensuing collision is given. (12 marks) What is the total kinetic energy before the ...

**Physics**

v1'=((m1-m2)/(m1+m2))v1 for the bullet =176ms^-1 And for the sandbag at rest v2'=((2m1)/(m1+m2))v1 =396ms^-1 The bullet is conserved after the bullet comes to rest in the bag. Hence Mgh= 1/2mv^2. I got stuck here what is going to be the value of M, is it sum of the two...

**Physics**

A bullet of mass 45 g is fired at a speed of 220 m/s into a 5.0-kg sandbag hanging from a string from the ceiling. The sandbag absorbs the bullet and begins to swing. To what maximum vertical height will it rise? Hint: Energy is not conserved as the bullet enters the bag but ...

**math**

The financial officer for an accounting firm allows Dh 50,000 for computer supplies in the annual budget. After 6 months, Dh 26,200 has been spent on supplies. Is this figure within 55% of the annual budget?

**Math(Urgent)**

The financial officer for an accounting firm allows Dh 50,000 for computer supplies in the annual budget. After 6 months, Dh 26,200 has been spent on supplies. Is this figure within 55% of the annual budget?