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a ball is propelled straight upward from ground level with aninitial velocity of 144 ft/sec.

When is the ball at its highest point and how high this point

A sink hole on the ground created by the collapse of an old underground mine measures 43.5 m × 37.9 m × 9.6 m. How much volume of earth (soil and rocks) is needed to fill the sink hole? Express your answers in cubic meters and in the correct number of significant figures.

The Department of Transport for a particular state has $71 million to spend on three bridges. They know that Bridge A will cost three times what bridge C will cost, and that Bridge B will cost about $6million more than Bridge C. About how much will each bridge cost?

Based on nuclear stability, what is the symbol for the most likely product nuclide when phosphorus-28 undergoes decay

The area of a parallelogram is given by the formula A = bh. The area of the parallelogram on the right is 85 sq. units, Find its base and height.

The base of the parallelogram is ___ units. (Type an integer or a simplified fraction.)

Solve the problem. Check answers to be sure they are reasonable.

The dimensions of a rectangular monitor screen are such that its length is 6 in. more than its width. If the length were doubled and if the width were decreased by 1 in., the area would be increased by 345 . What are the length and width of the screen?

The length of the monitor sceen is ___ and the width is ____

Grade 9 chemistry:

 Bob takes a break from singing and fills a balloon indoors where the temperature is 21 degrees Celsius (normal room temperature). Then, he puts the balloon in the fridge, where the temperature is 2 degrees Celsius. What will happen to his balloon? Why does this happen? 

Grade 9 chemistry:

 Zinc has a density of 7.13 g/cm3. Nasra takes a small piece of zinc and puts it into a graduated cylinder with 30 mL of water. She sees the water level in the graduated cylinder rise to 58 mL. Help Nasra determine the mass of the piece of zinc. Use G.R.A.S.P. (Given, Required, Analysis, Solution, Paraphrase) to show your work. 

Grade 9 chemistry:

A metal with a mass of 0.74 kg occupies a volume of 35 cm3. Calculate the density of the metal. Use G.R.A.S.P.

In simple harmonic motion, when is the speed the greatest?
I. when the magnitude of the force is minimum
II. when the potential energy is maximum.
III. when the potential energy is zero.
IV. when the displacement is maximum.

 A gas under 25 atm pressure occupies 35.0 L at 127 oC. What is the volume of the gas under standard conditions (1 atm, 0oC)?

In a chemistry class, a student is asked to mix 20% of solution A with water to makes 8 cups of 15% solution mixture. How many cups of solution A and how many cups of water do the student need to complete the required mixture?

Chemical formula of bleaching powder?

Tred, an alien on a planet where |g| = 1.7 m/s 2 , strikes a golf ball giving the ball a velocity of 36 m/s [40 o above the planet’s horizontal]. The ball lands in a crater floor that is 15 m below the level where it was struck. Determine:

a) the maximum height of the ball

b) the time of flight of the ball

c) the horizontal range of the ball 

Using the driving distance from your home to Point B, what would your average speed be if the trip takes you exactly 4.50h? 

Driving Distance: 489 km

Using the minimum travel time and the straight-line distance, determine the magnitude (size) only of the average velocity for the trip. DO NOT worry about the direction.

Straight-line Distance: 378.43km

Time: 1 hour, 11 minutes, 50 seconds

The balance of an investment after x years is modeled by v(x) =100(1.06x ) thousand dollars. The growth rate of the investmentbalance at year 10 is about:

a) $13.5 thousand/year

b) $9.7 thousand/year

c) $10.4 thousand/year

d) $179.1 billion/year

e) $100.2 million/year

From a shipment of 60 transistors, 5 of which are defective, asample of 4 transistors is selected

at random. What is the probability that at least one of the 4transistors is defective?

show work

if f(x) =x^2+2x-15 and g(x)= x+5 perform following andsimplify:

a) f+g (x) and f-g (x)

b)find the product f.g(x)

c)f/g (x) and g/f (x) and simplify.

d)fog (x) and gof (x)

What does gravity always do?

• It is not possible to collect evidence supporting or challenging the standard model of quantum mechanics
• Monotremes have likely undergone an evolutionary history that is distinct from other types of mammals.
• Flaws in the Bohr model of the atom should be used to discredit the idea that all matter is made up of atoms.
• It is unnecessary to research the composition and origin of elementary particles because the Bohr model is accurate.
• People should ignore all evidence indicating that most species of dinosaur went extinct at the end of the Cretaceous period.
• Monotremes are mammals that have significantly different body structures and reproductive strategies from other mammals.

I need the given values the unknown what we are going to find the equation to solve it the substitute so plug the numbers in then the answer

5) A car is traveling at 12m/s. The driver hits the gas and the car accelerates at 2.0m/s^2. How fast is the car going after 10 seconds?

. Typically, when a person coughs, he or she first inhales about 2.50 L of air at 1.00 atm and 25°C. The epiglottis and the vocal cords then shut, trapping the air in the lungs, where it is warmed to 37°C and compressed to a volume of about 1.70 L by the action of the diaphragm and chest muscles. The sudden opening of the epiglottis and vocal cords releases this air explosively. Just prior to this release, what is the approximate pressure of the gas inside the lungs

Convert grams per deciliter to miligrams per liter

Calculate the weight (Ms) of one-hectare furrow slice soil (20 cm) having a bulk density of 1.0 g cm^-3. Note: Vt = A x depth

Highest to lowest

Rank from high to lowest distance

1km, 100m, 50mm, 1cm, 5million nm, 1mm, 1Mm

Convert all quantities to meters

In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0808 s, during which time it experiences an acceleration of 205 m/s2.The ball is launched at an angle of 52.5 ° above the ground. Determine the (a) horizontal and(b) vertical components of the launch velocity.

(a) Number _____                Units _____

(b) Number _____                Units _____

A star is 3.95×10^14km. How many days does it take for light to travel from the star to the earth one light year is the distance light travels in one year 365 days light travels at a speed of 3.00x10^8m/s

____ days

What is the distance to the star in light years?

____ light years

Radio waves travel at the speed of light 3.00x10^8m/s. If you were to broadcast a question to the Mars rover spirit on Mars which averages 225,000,000 Miles from earth. What is the minimum time that you would have to wait to receive a reply?

_____ seconds

Ben and Jerry had 530 cards. Both of them lost some cards in a game. Ben lost of his cards and Jerry lost of his cards. Then, Ben and Jerry had 370 cards left. How many cards did Ben have at first?

1. A box weighs 45 N. Calculate the work done in lifting the box through a vertical height of 

(a) 4.0m.

(b) 67 cm.

A polynomial P is given. (a) Find all the real zeros of P. (b) Sketch a graph of P. 

A ball rolls off a horizontal table at 0.30 m/s and strikes the ground 0.32 m horizontally from the base of the table. How high is the table? Give your answer in meters (but only type the number into the answer field, not the units).