The main characteristic of all vertebrates is the presence of

a. cartilage

b. a large brain

c. a backbone

d. an exoskeleton

I got it. The answer was B

Calculate the pressure, in atmospheres, exerted by each of the following: a) 2.50 L HF containing 1.35 mol at 320.0 G b) 4.75 L NO2 containing 0.86 mol at 300.0 K c) 5.50 * 104 mL CO2 containing 2.15 mol at 57°C

The sides of a rectangle are 6.01 meters and 12 meters. Taking the significant figures into account, what is the area of the rectangle?

What is the force that is acting against gravity when things fall to the ground from thousands of feet above sea level?

When kids fall and stuff the loose blood for years almost a gallon of blood does that means the body regenates blood?

A bike rider starts from rest and accelerates 28.0 meters down a slope in 5.00 seconds. What is her acceleration? Select one: a. 3.21 m/sec2 b. 1.75 m/sec2 c. 9.80 m/sec2 d. 2.24 m/sec2

How much heat is contained in 100 kg of water at 60.0 °C?

Which of the following statements is the best definition of weather? Weather is the current conditions in the atmosphere. Weather is the usual conditions in the atmosphere. Weather is the average conditions in the atmosphere.

Analyze: In the series circuit what characteristic was common throughout the experiment? What changed as you added more light bulbs?

StA A boat takes off from the dock at 2.5 m/s and speeds up at 4.2 m/s2 for 6.0 s. How far has the boat traveled? Round your answer to the nearest whole number.

In Part A, you determined that the heat added to the coffee is what you got. If it takes 4.2 J of energy to raise the temperature of 1.0 mL of coffee by 1.0∘C, then it should take twice as much energy to raise the temperature of 2.