GS_Review

Given that up is positive and that g is 10 meters per second squared, if a ball is thrown vertically upward with an initial velocity of 20 meters per second, what will be its velocity in meters per second after 3 seconds?

-10

Rounded to the nearest whole number, what is the temperature in Fahrenheit of a substance at -40°C?

-40

On the Kelvin temperature scale give the whole number value that is the closest to absolute zero.

0

(Power) Calculate the force in newtons required to compress a spring with a stiffness of 2 newtons per meter 3.5 centimeters from equilibrium.

0.07 (Hooke's law F = - k x = 2 0.035 = 0.07 )

Providing your answer as a decimal, how much energy in kilowatt hours is needed to run a 50 watt light bulb for 5 hours?

0.25 (One watt is defined as the energy consumption rate of one joule per second. 1W = 1J / 1s)

Short Answer Arrange the following 4 liquid measures from the one with the SMALLEST volume to the LARGEST: 1.5 gallons; 128 ounces; 1 deciliter; 2 liters

1 DECILITER; 2 LITERS; 128 OUNCES; 1.5 GALLONS (1 gallon = 3.785 Liter, 100 oz = 3 liter)

Arrange the following 4 choices in order of INCREASING speed of computer data transmission: 1 gigabyte per second; 1 kilobyte per second; 1 megabyte per second; 1 terabyte per second

1 KILOBYTE PER SECOND; 1 MEGABYTE PER SECOND; 1 GIGABYTE PER SECOND; 1 TERABYTE PER SECOND

How many grams are in 1 metric ton?

1 MILLION (ACCEPT: 1 × 106)

How much does one cubic centimeter of water weigh at standard temperature and pressure?

1 gram

What is the mass, in grams, of a 1 kilogram object on a planet with a gravitational force of 3 meters per second squared?

1,000 ( The Mass of an object doesn't change when an object's location changes. Weight, on the otherhand does change with location. )

(Voltage) Four 5-ohm resistors are connected in a parallel circuit. What is the total resistance of the circuit in ohms?

1.25

Providing your answer in scientific notation with the correct number of significant digits, what is the sum of 1.2 X 10-3 and 2.7 X 10-4?

1.5 X 10-3

(Voltage/Power) What is the power in watts dissipated by a 10 ohm resistance when connected to a 10-volt battery?

10 (W = I^2 x R or, W = V^2 / R)

(Power) A 25 watt lamp has a resistance of 4 ohms. What is the voltage applied across the lamp?

10 P = V^2/R

Rounded to the nearest whole number, how many meters per second is equal to 40 kilometers per hour?

11

(Unit conversion) Giving your answer in liters and rounded to the first decimal place, what volume of fluid results after adding 3,400 milliliters of solution A and 34 deciliters of solution B to 5.2 liters of water?

12.0

Multiply the following 2 values, giving your answer in the correct number of significant figures: 10.1 X 1.201

12.1

(Unit conversion)To the nearest whole number, convert 60oC into degrees Fahrenheit:

140 = °C x 9/5 + 32 = °F (°F - 32) x 5/9 = °C

In kilometers and rounded to the nearest ten million, what is the average distance from the Earth to the Sun?

150 (92.96 million mi) (149,597,870,700 meters)

One quintillion contains how many zeroes?

18

Rounded to the nearest hundred, what is the temperature in Fahrenheit of a substance at 1000°C

1800

What is the diameter of a U.S. Penny

19.05 mm in diameter

Given g as 10 meters per second squared, how long, in seconds, will a pocket calculator travel upwards before starting to fall if thrown vertically with an initial velocity of 20 meters per second?

2

If you see a flash of lightning and ten seconds pass before you hear a clap of thunder, about how far away to the nearest mile is the thunderstorm?

2

What is the weight per volume percent concentration of a solution made by mixing 20 grams of glucose with enough water to make 1 liter of solution?

2%

Object 1 has a mass of 3 kilograms and moves across a frictionless surface at a velocity of 4 meters per second. Object 1 then strikes object 2, which has a mass of 2 kilograms and was motionless prior to the collision. The collision is completely inelastic. Providing your answer as a decimal to the nearest tenth, what is the speed of object 2 after the collision, in meters per second?

2.4 In the perfectly inelastic case where the two masses stick together, the final velocity of the combination will be 3*4/ (3+2) = 2.4

(Voltage) Giving your answer in amps to the nearest hundredth (read as: hun-DREDTH), how much current flows through a circuit containing a 3.6 ohm resistor and a 9 volt battery?

2.5( I = V/R )

(Momentum) Car A has a mass of 1000 kilograms and is traveling at 30 meters per second. Car B has a mass of 1200 kilograms and is traveling at 20 meters per second. Car A and Car B travel in opposite directions when they collide and stick together. Assuming the cars do not break apart into pieces, how fast do they travel in meters per second, to the nearest tenth, immediately after the crash?

2.7 P= MV 1000 X 30 - 1200 X 20 = 6000 V = 6000/ (1000+1200) = 2.7

Rounded to the nearest whole number, what is the temperature in Fahrenheit of a substance at 100°C ?

212

On Earth, how many hours long is a solar day, rounded to the first decimal place?

24.0 HOURS (ACCEPT: 24)

A 1 pint 9 ounce bottle of vinegar contains how many fluid ounces?

25 (1 pint = 16 oz)

(Energy) Giving your answer to the nearest thousand, how many joules of energy are required to raise the temperature of 2 kilograms of water by 3 degrees Celsius?

25,000 (heat = mass × specific heat × temperature change) = 2000 x1 x3 = 6000 cal = 6000 * 4.184 = 25104 Joules (1 cal = 4.184 Joules)

(Potential Energy) Consider a 2.0 kilogram rock that falls vertically from a ledge and strikes the ground with a velocity of 50 meters per second. If friction is ignored, what was the gravitational potential energy, in joules, of the rock when it was on the ledge in relation to the place where it struck the ground?

2500 When an object falls, its gravitational potential energy is changed to kinetic energy PE(gravitational) = weight * height = mgh Kinetic Energy = 1/2 * m *V^2

(Unit conversion) Giving your answer in angstroms, add 2 nanometers to 10 angstroms:

30 (angstroms 10^-10)

At standard temperature and pressure, how many grams, rounded to the nearest whole number, does the contents in a 12 ounce or 355 milliliter water bottle weigh?

355 ( 1oz = 29.57 ml)

The surface area of the Earth is 510,000,000 square kilometers. If 30% of the Earth's surface is land mass, how many square kilometers are covered in water?

357,000,000

Providing your answer as a decimal to the nearest hundredth, what is the density in grams per cubic centimeter of a material with a mass of 2.02 grams and a volume of 0.500 cubic centimeters?

4.04

An object with a mass of 5 kilograms travels around a horizontal circle with a radius of 2 meters at a speed of 3 meters per second in the counterclockwise direction. In meters per second squared, what is the centripetal acceleration, in terms of both magnitude and direction, when the direction of the velocity is north?

4.5 WEST

(Unit conversion)If Todd weighs 88 pounds, rounded to the nearest whole number, how much does he weigh in kilograms?

40 (1 kg = 2.2 lb)

(Unit conversion)According to its nutrition facts, a candy bar contains 100 calories. Giving your answer to the nearest hundred, what would the equivalent be in joules?

418,400 (ACCEPT: 418,000) Large calorie (Cal) is the energy needed to increase 1 kg of water by 1ºC at a pressure of 1 atmosphere. Large calorie is also called food calorie and is used as a unit of food energy.1 calories (large food)= 4184 Joules 1 small calories = 4.184 joules

If acceleration because of gravity is 10 meters per second squared, how many meters will an apple fall in three seconds if friction is ignored and it starts from a resting position?

45 (d=1/2(gt^2)

(Simple Machine) What is the ideal mechanical advantage of an 18- centimeter lever if the fulcrum is located 3 centimeters from the resistance?

5

Rounded to the nearest whole number, how many centimeters are in 2 inches ?

5

Rounded to the nearest whole number, how many degrees is the Moon inclined with respect to the orbit of the Earth about the Sun?

5

What is the year of a person's death who was born in the year 580 BC and lived 63 years?

517 BC (ACCEPT: 517)

One degree of latitude at the Earth's surface is equal to how many nautical miles?

60

A firefighter who weighs 700 newtons slides down a pole at a constant velocity. In newtons, what is the magnitude of the frictional force that acts on her and in what direction does that force act?

700 UPWARDS

In a reaction that runs to completion, 3 moles of substance A react with 5 moles of substance B to create 2 moles of substance C. To create 18 moles of substance C, what is the total number of moles of reactants required?

72

What is the ideal mechanical advantage of a ramp 16 meters long and 2 meters high that has a frictional coefficient of 2?

8

For a certain trait, there are three alleles, A, B, and C, and each locus contains 2 alleles. The frequency of allele A is 0.4 and the frequency of allele B is 0.1. What percentage of the population has either allele B or allele C present in their genome?

84%

How many newtons does one kilogram of water weigh at the surface of the Earth?

9.8

If you have 1 milliliter of a 75% ethanol solution, how much water, in milliliters, must be added to the 1 milliliter to obtain a 25% ethanol solution?

ANSWER: 2

What is the SI base unit used for the intensity of a light source?

CANDELA

Engineers in the USA often report pressure in PSI's. What does the abbreviation PSI stand for?

POUNDS per SQUARE INCH

What is the general term for the most basic device used to change the direction or magnitude of a force?

SIMPLE MACHINE

(SI Unit)The mole is the SI (read as: S-eye) base unit used to measure:

THE AMOUNT OF A SUBSTANCE - The mole is the SI base unit that measures amount of substance. The symbol for amount of substance is n. By definition, the mole contains a defined number of entities (usually atoms or molecules).

What is the SI unit for force

The newton (symbol: N) is the SI unit of force. A newton is how much force is required to make a mass of one kilogram go faster at a rate of one metre per second². 1kg m/s^2

What is the SI unit for pressure

The pascal (symbol: Pa) is the SI derived unit of pressure used to quantify, N/m^2

The Earth???s crust accounts for about what percentage of the Earth???s volume?W) 1% X) 5% Y) 10% Z) 15%

W) 1%

In a mercury barometer, which of the following is the typically reported height of the column of mercury that is required to balance against the pressure of 1 atmosphere?W) 760 millimetersX) 14 pounds per square inch Y) 1 meterZ) 32 inches

W) 760 MILLIMETERS

Which of the following units is most commonly used in the U.S. to compare the energy content of two different fuel sources? W) BTU X) Barrel Y) Kilowatt Z) Gallon

W) BTU

(Unit conversion) Which of the following metric masses are NOT equal:W) 1000 milligrams = 1 gram X) 100 milligrams = 1 centigram Y) 100 decigrams = 1 decagram Z) 100 grams = 1 hectogram

X

(Momentum)Two objects, each with a mass of 1 kilogram, are moving directly towards each other at 20 meters per second before they collide perfectly inelastically. What will be the impulse in kilogram meters per second on the first object? W) 0 X) 20 Y) 40 Z) 80

X) 20 (Impulse = Change in momentum)

Which of the following best describes the range in nanometers of wavelength for visible light?W) 240-630 X) 380-720 Y) 430-1160 Z) 510-1090

X) 380-720

(Unit conversion)Which of the following is the best estimate of what a gallon of water weighs in kilograms?W) 2 kilograms X) 4 kilograms Y) 6 kilograms Z) 8 kilograms

X) 4 KILOGRAMS (1 gallon = 3.79 kg)

Which of the following units is used to measure the diameter of protons?W) Attometer X) Femtometer Y) Leptometer Z) Ziggiometer

X) FEMTOMETER ( Year 2010, 0.8418±0.0007 fm )

The mass of a new 2002 USA quarter is about how many grams:W) 1.0 X) 2.5 Y) 5.5 Z) 7.0

Y

Which of the following does one arcsecond equal:W) 60 arcminutesX) 60 arcsY) 1/60th of an arcminute Z) 1/360th of an arcminute

Y 1 degree = 1° = 1/360 of a circle 1 arcminute = 1' = 1/60 of a degree 1 arcsecond = 1" = 1/60 of an arcminute = 1/3600 of a degree a degree is divided into 60 arcminutes and an arcminute is divided into 60 arcseconds.

A statistical test is carried out measuring the correlation between the number of cigarettes that a person smokes per day and life span. It is found that the number of cigarettes a person smokes per day is moderately correlated with a shorter life span. Which of the following correlation coefficients best exemplifies the relationship between life span and number of cigarettes smoked per day? W) 0.5 X) -0.1 Y) -0.5 Z) -0.95

Y) -0.5

(Potential Energy) Which of the following is closest to the potential energy in joules of a 50 pound boulder on top of a 100 foot cliff relative to the base of the cliff and given 9.8 meters per second squared as g? W) 1,500 X) 1,700 Y) 6,800 Z) 11,000

Y) 6,800 (p = mgh ) 100 foot = 30.48 m 50 lb = 22.679kg p = 22.679 x 9.8 X30.48 = 6774

Which of the following BEST approximates the circumference of a U.S. nickel:W) 1.41 centimeters X) 3.14 centimeters Y) 6.28 centimeters Z) 9.42 centimeters

Y) 6.28 CENTIMETERS (Solution: C = PI *(2cm) = 6.28cm)

(Power) Which of the following situations requires the most power?W) Lifting a 60 newton weight 50 meters in 3 minutes X) Lifting a 60 newton weight 70 meters in 5 minutes Y) Lifting a 70 newton weight 50 meters in 3 minutes Z) Lifting a 70 newton weight 70 meters in 5 minutes

Y) LIFTING A 70 NEWTON WEIGHT 50 METERS IN 3 MINUTES (power = work/time)

(SI Unit)Which of the following is the SI (read as: S-eye) unit prefix that represents the largest power of 10?W) Giga X) Mega Y) Peta Z) Tera

Y) PETA

Regarding computer technology, which of the following BEST describes the bit: W) an analogue magnetic storage sequence X) a computer processor Y) a memory value of 1 through 8 Z) a binary digit that stores information

Z

Which of the following is a number with 3 significant digits:W) 0.003 X) 0.03030 Y) 0.033 Z) 0.0300

Z) 0.0300

(Simple Machine) Which of the following is closest to the theoretical mechanical advantage of a screw with a mean diameter of 1 centimeter and a lead of 2 millimeters?W) 2 X) 5 Y) 8 Z) 16

Z) 16 (10*PI/2)

(Power) Which of the following situations produces the MOST power? W) 160 newton force acting over 20 meters in 32 seconds X) 160 newton force acting over 2 meters in 3.2 seconds Y) 16 newton force acting over 20 meters in 3.2 seconds Z) 16 newton force acting over 200 meters in 3.2 seconds

Z) 16 NEWTON FORCE ACTING OVER 200 METERS IN 3.2 SECONDS

How many light-seconds are in a light-year:W) 300,000 X) 360,000 Y) 1,314,000 Z) 31,557,600

Z) 31,557,600

(Frequency) If you travel toward a loudspeaker playing a sound at 500 hertz, which of the following may be the frequency of sound you hear, in hertz?W) 50 X) 100 Y) 500 Z) 600

Z) 600

Which of the following U.S. year 2001 coins is closest in diameter to 2 cm?W) a dollar X) a quarter Y) a dime Z) a penny

Z) a penny (coin is 0.75 inches (19.05 mm) in diameter and 0.0598 inches (1.52 mm) in thickness.) dime (17.9 mm (0.705 inch) in diameter)

(SI Unit) What are the most common SI units used for the acceleration of an object?

meter per second squared

Which of the following foods contains the MOST calories:W) 1, twelve-ounce non-diet sodaX) 1 tablespoon catsupY) 1 8-ounce fresh orangeZ) 1 tablespoon white, granulated sugar

w 1 12 oz soda contains 39 gram sugar about 3 tablespoon

how long in years do wind turbines typically last? W) 10 to 15 X) 20 to 25 Y) 30 to 40 Z) 50 to 60

x

Multiple Choice At 132 feet below the ocean surface, by how much does the pressure exceed that at the surface?W) 7 bars X) 13.2 bars Y) 42.1 psi Z) 58.8 psi

z) p = dgh d = density of the liquid; g = acceleration due to gravity; h = height of liquid column density of sea water to be 1025 kg/m³ For every 33 feet (10.06 meters) you go down, the pressure increases by 14.7 psi. I At sea level, the air that surrounds us presses down on our bodies at 14.7 pounds per square inch 1 atm (Atmospheric pressure) = 2.28 pound/cm^2 = 14.7 pound/in^2(psi) = 760 mm Hg