PHYSICS
I need to answer: What is the centripetal acceleration of the ball at 7.80 rev/s? and What is the centripetal acceleration at 6.51 rev/s?
PHYSICS
An athlete swings a ball, connected to the end of a chain, in a horizontal circle. The athlete is able to rotate the ball at the rate of 7.80 rev/s when the length of the chain is 0.600 m. When he increases the length to 0.900 m, he is able to rotate the ball only 6.51 rev/s
algebra
Suppose a student wants to be a millionaire in 40 years. If she has an account that pays 8% interest compounded monthly, how much must she deposit each month in order to achieve her goal of having $1,000,000? What is the present value of this annuity?
Math
One way to write 99 using four nines is (9x9) + (9+9). Now write 100 using four nines.
geometry
Suppose right triangle ABC has one acute angle 47º. Suppose also that right triangle DEF has an acute angle 43º. How are triangles ABC and DEF related?
mathematics
what is the total of the non-equal sides of the smaller and larger triangle.
english (poetry)
i have to write an acrostic poem on the word black...help me please and thank you.
Economics
1. Decision making: which factor of production is represented by each of the following: a. An office building b. An assembly line worker c. A student
4th grade
HOW DO I WRITE THE WORD FORM AND TELL THE VALUE OF THE UNDERLINE DIGIT OF EACH NUMBER 4,(6)00,028
Algebra
Use factoring to solve the equation: x^2+13x+36+0
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