11. How many elements are in the second period, or row, of the periodic table

a. 1

b. 2

C. 8

d. 18

6. A Soldering Iron has a power of 25W. It uses the 230V mains supply. What is the current when it is switched on?

A mother pats a child every time he throws a chocolate wrapper in the dustbin. This is an example of (A) Observational Learning (B) Negative Reinforcement (C) Spontaneous recovery (D) Positive Reinforcement

Write an essay describing and predicting the effects of fitness-related stress management techniques on the body.

It takes 3 minutes to make toast in a 1500 watt toaster. Calculate how much work is done by the toaster.

One car is sitting still the other is moving at a velocity of 4m/s. If two cars have a mass of 0.04 kg run into each other, what is the momentum of the pared cars?

Where did the asteroids in the asteroid belt come from?

Your university radio stawon has a 5.0-kw radio transmixer that broadcasts uniformly in all direcwons; listeners within 15 km have reliable recepwon. you want to increase the power to double that range. what should be the new power?

A projectile is thrown upward so that its distance above the ground after t seconds is h (t) equals negative 16 t squared plus 704 t. a) Find the maximum height the object reaches. b) Find the time it takes the object to reach the ground.

Whats an example of projectile motion

The fact that the sun rises and sets at different times during the day depending on the time of year is an example of a data trend. True or False