An object is thrown straight upward from the edge of a building with a velocity of 20 ms-1. Where will the object be 5 s after it was thrown?

The thermometer which functions based on the variation of the potential difference between the junctions of two dissimilar metals maintained at different temperatures is called a _______

Given two vectors a→=3i^+4j^-k^ and b→=i^-3j^+k^, find a unit vector n^ normal to the plane containing a→ and b→ such that a→,  b→ and n^ in that order form a right-handed system.

If a→=4i^+7j^-5k^  and  b→=3i^+4j^+k^, find the direction cosines of a→-b→

Given that PaVbTc = k,  where k is a constant, for what values a, b and c does the equation reduce to Charles’ law?

A man drives a car from his garage to a nearby city which is 200 km from his house and returns 2 h later to the garage. Calculate his average velocity.

How much heat is transferred in 1 hour by the process conduction through a concrete wall 2 m high, 3.65 m long and 0.2 m thick if one side of the wall is held at 20 degrees C and the other side at 5.0 degrees C? [Take the thermal conductivity of concrete as 1.3×10-6 Wm-1degrees C-1].

A thermos flask contains 300 g of coffee (assumed to be essentially water) at 90ºC. 50 g of milk (assumed to be essentially water) at 15ºC is poured into the coffee. What is the final temperature of the mixture?

A steel metre scale is to be calibrated so that the millimetre intervals are accurate to within about 5×10-5 mm at a certain temperature. What is the minimum change in temperature allowable during the calibration? [αsteel=11×10-6 degreesC-1].

A particle moves in such a way that its displacement from a reference point at any instant is given by s=7t2+4t-5 where s is in metres and t in seconds. Find its average velocity in the time interval between 3 s and 5 s