# Posts by rajesh

Total # Posts: 21

**Maths**

400

**Physics**

Two parallel forces of magnitude 4 and 6 newton are acting on a body placed at 4m apart. Resultant force will be

**science**

assuming that sea water is an aqueous solution of NaCl its density is 1.025g/mL at 20C temperature and NaCl concentration is 3.5%(by mass), the normality of the sea water?

**MAths**

A four-wheel-drive vehicle is transporting an injured hiker to the hospital from a point that is 30 km from the nearest point on a straight road. The hospital is 70 km down that road from that nearest point. If the vehicle can drive at 30 kph over the terrain and at 180 kph on...

**math**

A jewelry box with a square base is to be built with copper plated sides, nickel plated bottom and top and a volume of 40cm^3. if nickel plating costs $2 per cm^2 and copper plating costs $1 per cm^2, find the dimensions of the box to maximize the cost of the materials?

**math**

In a shower 5cm of a rain falls. Find the volume of water on 2 hectares of land.

**maths**

1250

**math**

An urn initially contains 5 white and 7 black balls. Each time a ball is selected, it’s color is noted and it is replaced in the urn along with two other balls of the same color. Compute the probability that (a) one black and one white is selected. (b) exactly two black ...

**physics**

6 cm

**physics**

A bike of wheel radius. 40 cm at its highest speed its meter show 300RPM.then evalute the speed of the bike on this reading

**chemistry**

a) it's right

**dynamics**

a series of small packages are being moving by athin conveyor belt that passes over a 300mmradiusidler pulley.the belt starts from rest at time t=0 and its speed increses at a constant rate of 150mm/s*2.knowing that the coffient of static friction between the packages and the ...

**dynamics**

cars A and B are d=60m apart and traveling respectively with constant speeds v1=32km/h and v2=24km/h on an ice covered road.knowing that 45s after driver A apples his breaks to avoid overtaking car Bthe two cars collide,determine a)the uniform deceleration of car A b)the ...

**general**

-M-A-K- Clues *girls like it *boys use it *parents hate it

**physics**

find the force on unit positive q, when placed in the centre of a semicircular wire having uniformly distributed charge Q.

**physics**

Three blocks of masses M1=26kg,M2=38kg and M3=41kg are connected by 2 strings over 2 pulleys.Friction is negligible. 1. Determine the magnitude of acceleration and 2. the magnitude of the tension in each of two strings

**physics**

In a roller coaster ride cars and passengers slide down an incline of 36 degrees to horizontal if the friction is negligible find magnitude of acceleration

**physics**

Here S=44m V=42m/s U=? a=3m/s² Now we know that 2as=v²-u² 2(3)(44)=(42)²-u² u=10√15m/s

**Social Studies**

india capital

**statistics**

drawer contains 50 bolts and 150 nuts. Half of the bolts and half of the nuts are rusted. If one item is chosen at random, what is the probability that it is rusted or a bolt ? In a study to test whether there is a difference between the average height of adult females born in...

**chem**

2.9

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