biology
when robert hooke observed cork through his compound microscope , all that he could see were empty chambers. why were hooke's chambers empty
math
Marni wants to fence in a rectangular are of 48 ft squared. she wants to but the least amount of fencing. 1. Describe the dimensions she should us to build the are. use whole numbers only 2. How much fencing wil she need 3. Explain how you found that answer?
physics
A baseball is thrown at an angle of 40.0 above the horizontal.The horizontal component of the baseball's initial velocity is 12.0 m/s^2 . What is the magnitude of the object's acceleration?
physics
A baseball is thrown at an angle of 40.0 above the horizontal.The horizontal component of the baseball's initial velocity is 12.0 m/s^2 . What is the magnitude of the object's acceleration?
Geometry
In a garden, a birdbath 2ft 6 in. tall casts an 18-in. shadow at the same time an oak tree casts a 90-ft shadow. How tall is the oak tree?
Psychology
semantic
chem (measurements & dimensional analysis)
idk
math
Sheila drew single marbles from a bag, recorded the outcome, and replaced the marble. In 50 draws, Sheila drew 20 white marbles and 30 black marbles. What is the experimental probability that the next marble will be black?PLEASE HELP !!!!!!!!!
chemistry
If you have 2 moles of glucose in 8 liters of solution, what is the molarfity of this solution?
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