Physics: Quantum Quest
The slope of a velocity versus time graph represents: W) acceleration X) velocity Y) position Z) displacement
Acceleration
This type of matter has a definite volume but no definite shape
Gases
What is the primary function of the mitochondria in a cell
Producing energy (ATP)
FREEEEE
+100 Points!!!
The pressure blood exerts against the inner walls of the blood vessel is known as ________.
Blood Pressure
What is the mass, in kilograms, of a 5-kilogram rock on a planet with a gravitational acceleration one-half that of the Earth’s?
5 kg
What element has 36 electrons
Kr- Krypton
Which of the following is a list of entirely abiotic factors?
A. Soil pH, temperature, viral infections.
B. Viral infections, predators, competition for resources.
C. Sunlight levels that penetrate the canopy, soil pH, number of species.
d. Temperature, soil pH, oxygen content of soil.
d. Temperature, soil pH, oxygen content of soil.
The sum of three consecutive odd numbers is 57. Find the numbers.
The three consecutive odd numbers are 17, 19, and 21. You can find these by solving the equation 2x+1+2x+3+2x+5=57
Blood leaves the right ventricle through a large artery called the
pulmonary artery
Which of the following is NOT true: W) a spring scale can be used to indirectly measure acceleration X) momentum is a vector Y) impulse is a vector Z) a change in direction of an object’s motion cannot affect its momentum
a change in direction of an object’s motion cannot affect its momentum
Define exothermic reaction
A reaction that releases heat to the surroundings.
During the period when life is believed to have begun, the atmosphere on primitive Earth contained abundent amounts of all the following gases EXCEPT
1-Oxygen
2-Hydrogen
3- ammonia
4-methane
Oxygen
What were Hilbert's three questions about math?
Is math...
-Complete
-Consistent
-Decidable
(nope)
When ventricles ________, the AV valves are closed.
Contract
For an object moving in uniform circular motion, the direction of the instantaneous acceleration vector is:
-tangent to the path of motion
-equal to zero
-directed radially outward
-directed radially inward
DIRECTED RADIALLY INWARD
How does the Law of Conservation of Mass relate to chemical reactions?
It emphasizes that mass is neither created nor destroyed during a chemical reaction.
Malaria is an infectious disease caused by a single-celled eukaryotic organism, carried by female mosquitoes. The mosquito is the:
A. pathogen. B. vector. C. agent. D. disease. E. virus.
Vector
Antonia likes calculating the sum of the digits that she sees on her digital clock. For example, if the time were 11:47, the sum would be equal to 13(1+1+4+7). What is the largest sum she can get on a 12-hour digital clock?
The largest sum on a clock is 23. The time would read: 9:59.
A recording of the hearts electrical activity is referred to as a(n)__________.
electrocardiogram?
A boat heads directly eastward across a river at 12 m/s. If the current in the river is flowing at 5 m/s due south, what is the magnitude of the boat's resultant velocity.
-7m/s
-8.5m/s
-13m/s
-17m/s
13 m/s
Describe the difference between an ionic and covalent bond
Ionic bonds involve the transfer of electrons between atoms, while covalent bonds involve the sharing of electrons between atoms.
A cell contains enzymes, DNA, ribosomes, mitochondria and a plasma membrane. The cell could be from: A. bacteria. B. an animal but not a plant. C. a plant but not an animal. D. any kind of organism. E. a plant or an animal.
. a plant or an animal
In triangle ABC, the measure of ∠B is 90°, BC=16, and AC=20. Triangle DEF is similar to triangle ABC, where vertices D, E, and F correspond to vertices A, B, and C, respectively, and each side of triangle DEF is 1/3 the length of the corresponding side of triangle ABC. What is the value of sinF?
sinF=3/5 or .6
Triangle ABC is a right triangle with its right angle at B. Therefore, AC is the hypotenuse of right triangle ABC, and AB and BC are the legs of right triangle ABC. According to the Pythagorean theorem,
AB=square root (20^2−16^2)= square root (144)=12
Since triangle DEF is similar to triangle ABC, with vertex F corresponding to vertex C, the measure of angle∠F equals the measure of angle∠C. Therefore, sinF=sinC. From the side lengths of triangle ABC,
sinF=opposite side /hypotenuse=AB/AC=12/20=3/5
Larger veins have ________ to prevent backflow of blood.
Valves