# Posts by Jem

Total # Posts: 33

**Science: Please Help**

So, Ms. Sue, would it be false?

**Science: Please Help**

True or false, do animals convert co2 from the atmosphere into carbohydrates?

**Science help**

Okay...so then is it true?

**Science help**

Animals convert co2 from the atmosphere into carbohydrates. Is this false?

**Math Galp**

Thank you so much, Steve!

**Math Galp**

*instead of galp. I hate autocorrect.

**Math Galp**

I meant to say help instead of fall. Oops!

**Math Galp**

A DJ charges $250 for 1 hour of work and charges $410 for 3 hours of work. Write an equation that models this situation. Let "x" represent the number of hours worked and "y" represent the cost to hire the DJ. Thank you for the help! I appreciate it.

**PHYSICS**

an airplane flying due north with a speed relative to the ground of 300 km/hr. it then encounters a cross-wind that is directed due east. of the resultant speed of the airplane is now 302 km/hr, how fast is the cross wind?

**math**

the product of two whole numbers is 48. find their greatest possible sum. what is the least sum.?

**maths**

i have to design a wine glass using quadratic and linear and i don't know what to do!!!!!

**algebra**

What quantity of pure acid must be added to 600 mL of a 45% acid solution to produce a 50% acid solution?

**Psychology**

integrate statistics with "real-life" issues, such as day care, in order to interpret them.

**algebra**

9w + 3 = 6(w - 2)

**Physics**

A 500 g metal ball is whirled in a vertical circle. What is the centripetal force which draws it toward the center of the circle as it passes through the highest point?

**Physics**

A meter stick is supported at its center. If a load of 150 dynes is placed at the 20 cm mark, where should a 100 dynes load be placed in order that the stick remains in the horizontal position?

**Physics**

Which of the following is NOT the correct dimension for electric field? A. N/C B. V/m C. J/Cm D. All of the answers have the correct dimensions for electric field

**physics**

a bullet penetrates 7 cm into a block of wood when fired at a speed of 33 m/s. Find the deceleration and the time taken to stop

**Change boring verb and ordinary adjectives**

Bill BECAME AGGRAVATED by his little sister

**physics**

Apparently the answer is 5.3 at 26 degrees but I don't understand why?

**Physics**

An arrow is shot at ground level with an initial speed of 50.0 m/s at an angle of 25.0° above horizontal. What is its x-coordinate when the arrow is on the way up and its y coordinate is 5.00 m above the ground?

**Physics**

A 2.97 kg block initially at rest is pulled to the right along a horizontal surface by a constant, horizontal force of 12.9 N. The coeﬃcient of kinetic friction is 0.126. The acceleration of gravity is 9.8 m/s^2. Find the speed of the block after it has moved 2.92 m. ...

**Physics**

then how would you find vertical velocity component?

**Physics**

An artillery shell is ﬁred at an angle of 32.2◦ above the horizontal ground with an initial speed of 1610 m/s. The acceleration of gravity is 9.8 m/s 2. Find the total time of ﬂight of the shell, neglecting air resistance. Answer in units of min Find its ...

**Physics**

A ball of mass 0.4 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the kicker’s foot is 16 m/s at angle of 46◦ above the horizontal. The top of the fence is 4 m high. The ball ...

**Chemistry**

Thanks so much

**Physics help!!**

A truck travels beneath an airplane that is moving 120 km/h at an angle of 24◦ to the ground. How fast must the truck travel to stay beneath the airplane? Answer in units of km/h What is the magnitude of the vertical component of the velocity of the plane? Answer in ...

**Physics help!!**

A descent vehicle landing on the moon has a vertical velocity toward the surface of the moon of 35.4 m/s. At the same time, it has a horizontal velocity of 57.2 m/s. At what speed does the vehicle move along its descent path? At what angle with the vertical is its path?

**Chemistry**

Ln( K/ 4.90*10^-4) = 1.56189 Solve for K

**chemistry**

3NaCl(aq)+AlPO@SUB{4}(s)

**calculus**

what is the derivative of (sin^2)x ?

**Science**

1.Is molar mass always done for one mol of substance? Let me make up an example: 2H2(g)+O2(g)--> 2H2O When finding molar mas of water would it be 2(2(1.01)+2(16)) or just 2(1.01)+16? 2. I'm not really sure about endergonic exergonic reaction because my teacher is ...

**Math**

2x+3>0 so x>=-3/2 if it was less than -3/2 the inside of the squareroot would be negative and that number does not exist in real number system. For range If I remember it is normally y>0 for this function but since it is shifted up 3 it would now be y>=3