Which of these groups of elements show the least electronegativity?

A). inner-transition elements

B). halogens (7A)

C). alkali metals (1A)

D). transition elements

E). alkaline earth metals (2A)

True or false a truck has greater inertia than a bicycle

How does a vacuum flask keep drinks hot? Explain in terms of conduction, convection and radiation.

Who made the very first solar cell and in what year?

What is final velocity of a 400kg car traveling at 36m/s that undergoes a braking force of 600N for 8 seconds

an electric motor lifts an elevator that weighs 1200N a distance of 9m in 15s, what is the power of the motor in watts?

Humpty Dumpty (12 kg) sat on a wall (2 m high). What was his potential energy, before his great fall? A. 235.2 J B. 235.2 N C. 24 J D. 246.1 W

Explain how we were able to boil water at room temperature

A car drives at 30km/h around a roundabout. I still the car accelerating?

It is well known that bullets and other missiles fired at Superman simply bounce off his chest. Suppose that a gangster sprays Superman's chest with 6.7 g bullets at the rate of 78 bullets/min, and the speed of each bullet is 530 m/s.

Seth starts from rest at the end of his driveway and accelerates down the road on a skateboard at 4 m/s squared 12 seconds what is the speed at the end of his 12 seconds