QUESTION 1
How long? How much time in seconds does it take for the sled to
go down part of a hill?
A sled with a total mass of 671 kilograms is going down a
straight part of a hill where the angle of incline is 10.6
degrees.
The length of the straight part of the hill is 76.4 metres.
The speed of the sled at the top of the hill is 4 meters per
second.
The combined forces of...
1a. How many mL of (6.3800x10^-1) M HCOOH would it take to reach
the equivalence point in the titration of (4.8600x10^1) mL of
(4.72x10^-1) M KOH?
1b. What is the pH at exactly 1/2 of the volume required to
reach the equivalence point in the titration of (4.640x10^1) mL of
(4.140x10^-1) M HCNwith (6.54x10^-1) M KOH?
Please help, will rate.
A spherical bowling ball with mass m = 3.3 kg and radius R =
0.11 m is thrown down the lane with an initial speed of v = 8.9
m/s. The coefficient of kinetic friction between the sliding ball
and the ground is ? = 0.28. Once the ball begins to roll without
slipping it moves with a constant velocity down the lane.
What is the magnitude of the angular acceleration of the bowling
ball as it slides down the...
20.00 mL of 0.11 M HNO3 is titrated with 0.25 M NaOH. What
volume of base is required to reach the equivalence point?
Calculate pH at each of the following points in the titration.
a) 4.40 mL
b) 8.80 mL
c) 12.00 mL
How many seconds are required to deposit 0.277
grams of silver metal from a solution that
contains Ag+ ions, if a current of
0.655 A is applied.
_____ s
How many seconds are required to deposit 0.223
grams of silver metal from a solution that
contains Ag+ ions, if a current of
0.856 A is applied.
____ s
A.) How many seconds are required to
deposit 0.247 grams of magnesium
metal from a solution that contains
Mg2+ ions, if a current of
0.840 A is applied.
B.) How many amperes are required to
deposit 0.120 grams of aluminum
metal in 732 seconds, from a solution that
contains Al3+ ions .
- How many years will it take for $100,000 to grow to $500,000
if it is invested at an annual interest rate of 9.15%? Round to the
nearest 0.01.
- You are offered a line of credit with a quoted interest rate
of 20% with daily compounding. What is your effective annual
interest rate? Round to the nearest 0.01%.
The half-life of the radioactive isotope
polonium-214 is
1.64×10-4 seconds.
How long will it take for the mass of a sample of
polonium-214 to decay from 70.0
micrograms to 17.5
micrograms?
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