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The sum of the digits of a certain three-digit number is nine. The sum of the hundreds and the tens
The sum of the digits of a certain three-digit number is nine. The sum of the hundreds and the tens digits is equal to the ones digit minus one. The number, divided by nine, equals three times the ones digit. What is the number?
A 10.0 kg mass and a 19.5 kg mass are hung from either end of a bar of negligible weight. If the 10.
A 10.0 kg mass and a 19.5 kg mass are hung from either end of a bar of negligible weight. If the 10.0 kg is increased to 12.0 kg, the balance point shifts by 16.2 cm. How long is the bar?
If the width of a rectangle is increased by 4 and the length increased by 1, the area increases by 6
If the width of a rectangle is increased by 4 and the length increased by 1, the area increases by 62. If instead the width is increased by 2 and the length decreased by 3, the area decreases by 12. Find the original dimensions.
A horizontal beam of negligible weight is simply supported at each end by columns. When a vertical l
A horizontal beam of negligible weight is simply supported at each end by columns. When a vertical load as placed on a beam 1.00 m from the left end, the vertical upward reaction is the right column is 62.5 N. When the load is increased by 40.0 N, the reaction in the right column increases to 75.0 N. How long is the beam?
A certain number has three digits and the sum of those digits 12. When the number is divided by the
A certain number has three digits and the sum of those digits 12. When the number is divided by the number formed by the hundreds and the ones digits, the answer equals 11. In addition, the sum of the hundreds and the tens digits is 10 bigger than the ones digit. What is the number?
A projectile is launched from the ground. Its height (metres) after t seconds is given by s = kt2 +
A projectile is launched from the ground. Its height (metres) after t seconds is given by s = kt2 + v0t where k is a constant, v0 is the initial velocity. If the height at 1.0 s is 8.7 m and the height at 1.5 s is 7.625 m, determine the height at time 2.0 s.
The atomic mass of three compounds are known: methane (CH4) is 16.0, glycerol (C3H8O3) is 91.9, and
The atomic mass of three compounds are known: methane (CH4) is 16.0, glycerol (C3H8O3) is 91.9, and water (H2O) is 18.0. Calculate the atomic mass of C, H, and O by solving this linear system: C + 4H = 16.0 3C + 8H + 3O = 91.9 2H + O = 18.0
A projectile is launched from height ho above the ground. Its height (metres) after t seconds is giv
A projectile is launched from height ho above the ground. Its height (metres) after t seconds is given by s = kt^2 + v0t + ho where k is a constant, v0 is the initial velocity. If the height at 1.0 s is 7.75 m and the height at 1.5 s is 6.625 m, and the height at 2.0 s is 5.00 m, determine the height at time 2.5 s.
