# Posts by erwin

Total # Posts: 21

**Physics**

A boat crosses a river 1.5km wide in 15mins. If the river flows at 2km/hr calculate the velocity of the boat.

**parabola**

Architechture A modern building has an entry in the shape 24.2.ft wide at the base. Find an equation for the parabola case (see the figure) if the vertex is put at the origin of the coordinate sytem. Height is 32.5 ft.

**Check my answers L.A**

Those are correct 100%

**math**

between 800 and 900 . tens digit is 3 more than the ones digit . ones digit is 5 less than the hundreds digit

**math**

between 100 and 200. . tens digit is 3 less than the hundreds digit. .ones digit 1 more than the tens digit

**math**

between 100 and 200. . tens digit is 3 less than the hundreds digit. .ones digit is 1 more than the tens digit

**math**

between 400 and 500. ones digit is 2 less than the hundreds digit tens digit is 2 less than the ones digit

**Health and Physical Education 8**

the answers were all of the above joint osteoporosis I got a 100.

**MATH**

Zolita is 100 percent correct those are the answers i got.

**language arts**

B B C B A These are correct.

**math**

528 ...

**science**

How do direct and alternating current differ?

**science**

How is temperature related to the average kinetic energy of molecules that make up a substance?

**science**

What do scientists mean when they say that action equals reaction?

**science**

What is the effect of increasing the temperature of a body?

**physics**

A hunter at a distance dx from a coconut tree points the nuzzle of his gun directly at a monkey sitting on the tree at a height dy. The monkey sees the hunters and drops vertically from the tree at the very instant of firing. Will it be hit by the bullet? Explain.

**physics**

Under what condition can a moving object be in a state of equilibrium? If you double the net force on an object and keep the mass constant, how will its acceleration be affected? What will happen to the acceleration if the mass of an object is tripled but the force is kept the...

**physics**

If you were standing in an enclosed car moving at constant velocity, would you have learned in some special way to compensate for the car’s motion? What if the car were moving with constant acceleration? Explain.

**MAth (make equation true)**

7_9_3_1=25

**MAth (make equation true)**

6 squared _2_7_2=4

**chemistry**

how many moles of Fe2O2 would be formed by the action of Oxygen one kilogram of iron?

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