math
What are six ways to name or describe the number 81?
physics
the speed of a wave on a string is 150m/s when the tention is 120n the percentage increase in the tension in order to rise the wave speed by 20% is
physics
the speed of a wave on a string is 150m/s when the tention is 120n the percentage increase in the tension in order to rise the wave speed by 20% is
math
Standing on the top of a building, Eric spots his friend's car at an angle of depression of 35°. The car is 360 feet from the base of the building. How tall is the building to the nearest hundredth of a foot?
Statistics
Find the area of the shaded region where a = -2.15 and b = 2.12. Note: the graph may not be drawn to scale.
chemistry
An atom emits a photon of wavelength 1.08 meters. What is the energy change occurring in the atom due to this emission? (Planck's constant is 6.626 × 10È³Ê joule seconds, the speed of light is 2.998 × 10§ m/s)
challenge to maths
20 (no of the form 2^k+1 and 2^k+2 between 1 and 1000)
challenge to maths
n buckets are arranged in a circle, each containing 1 token. Starting with one of the buckets, you take out a coin and move it into the next bucket counterclockwise. You then take two tokens out of this bucket and move them into the next one. This process is repeated over and ...
maths
no
maths
no
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