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micole
Questions (22)
i am between 21 and 34 you say name when you count by fives from zero
2 answers
385 views
If you have a list of acids or bases and their conjugate salts, and are asked which pairs create the best buffer, how would you
2 answers
967 views
We're studying acids and bases; the question states that 50mL of 0.1M HNO3 solution is mixed with 25mL of 0.1M NaOH. What is the
1 answer
483 views
Two point charges lie on the x axis. A charge of + 6.5 µC is at the origin, and a charge of -1.5 µC is at x = 10.0 cm.
What is
1 answer
1,526 views
At a recent rock concert, a dB meter registered 112 dB when placed 1.70 m in front of a loudspeaker on the stage.
(a) What was
0 answers
675 views
A 64.0 kg person stands on a lightweight diving board supported by two pillars, one at the end of the board, the other 1.20 m
1 answer
1,231 views
A neutron collides elastically with a helium nucleus (at rest initially) whose mass is four times that of the neutron. The
0 answers
1,234 views
An explosion breaks an object into two pieces, one of which has 3.20 times the mass of the other. If 8000 J were released in the
0 answers
1,012 views
A 85 kg trampoline artist jumps vertically upward from the top of a platform with a speed of 3.5 m/s.
How fast is he going as he
0 answers
775 views
A person is to be released from rest on a swing pulled away from the vertical by an angle of 15.8°. The two frayed ropes of the
0 answers
1,062 views
A 2.0kg box rests on a plank that is inclined at an angle of 65° above the horizontal. The upper end of the box is attached to
0 answers
653 views
A block of mass m1 = 4.50 kg sits on top of a second block of mass m2 = 13.9 kg, which in turn is on a horizontal table. The
0 answers
616 views
Seatbelts provide two main advantages in a car accident: (i) they keep you from being thrown from the car, and (ii) they reduce
1 answer
1,539 views
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 9.50 m/s at an angle of
0 answers
669 views
A Coast Guard cutter detects an unidentified ship at a distance of 18 km in the direction 16.2° east of north. The ship is
0 answers
933 views
A firefighter at street-level, 55.0 m away from a burning building, directs a stream of water from a fire hose at an angle of
0 answers
1,180 views
A football is thrown horizontally with an initial velocity of (16.5 m/s). Ignoring air resistance, the average acceleration of
0 answers
702 views
You are riding on a jet ski at an angle upstream on a river flowing with a speed of 2.8 m/s. Suppose the jet ski is moving at a
0 answers
801 views
A football is thrown horizontally with an initial velocity of (16.5 m/s). Ignoring air resistance, the average acceleration of
0 answers
1,173 views
A ball is thrown upward from the top of a 27.0-m-tall building. The ball's initial speed is 12 m/s. At the same instant, a
0 answers
1,356 views
A car is behind a truck going 23.0 m/s on the highway. The driver looks for an opportunity to pass, guessing that his car can
0 answers
736 views
Driving along a crowded freeway, you notice that it takes a time t to go from one mile marker to the next. When you increase
1 answer
636 views
