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What is the final velocity of the two players?
A football player of mass 108 kg running with a velocity of 2.0 m/s [E] collides head-on with a 110 kg player on the opposing team travelling with a velocity of 3.2 m/s [W]. Immediately after the collision the two players move in the same direction.
1 AnswerPhysics2 years agoWhat does the slope of the line of a work vs. distance graph represent?
5 AnswersPhysics2 years agoA 3.5 kg projectile was launched vertically at 75m/s. The projectile reached a maximum height of 180m.?
How much energy was lost to heat while the projectile was rising?
A. 0 J
B. 3.7x10^3 J
C. 6.2x10^3 J
D. 9.8x10^3 J
Show your work.
2 AnswersPhysics2 years agoWhat is the minimum power developed by a 75kg person who climbs a set of stairs 4.5m high in 5.0s?
A. 6.8x10^1 W
B. 6.6x10^2 W
C. 1.7x10^3 W
D. 3.3x10^3 W
Show your work.
3 AnswersPhysics2 years agoHow many beats (complete cycles) will she hear in 4.0 s?
A person building a train whistle makes one chamber slightly longer than the other. The resulting tones are 202.5 Hz and 205 Hz. How many beats (complete cycles) will she hear in 4.0 s?
1 AnswerPhysics3 years agoPhysics : How wide is the canyon?
While overlooking a canyon, you yell your name very loudly. If it is 20.0°C, and you hear your name echoed back to you in 1.60s, how wide is the canyon?
2 AnswersPhysics3 years agoWhat is the speed of the vehicle and the actual frequency of the siren?
A listener hears a frequency of 571 Hz when a vehicle with a siren is moving toward them and 464 Hz when the vehicle is moving away. What is the speed of the vehicle and the actual frequency of the siren? Assume a sound speed of 340 m/s.
4 AnswersPhysics3 years agoPhysics Question : What is the difference in the frequencies?
A train in a station sounds its whistle at a frequency of 512 Hz while moving toward a stationary observer at 4 m/s. A stationary train sounds its 512 Hz whistle at the same time. What is the difference in the frequencies heard by the observer, assuming a sound speed of 344 m/s?
4 AnswersPhysics3 years agoPhysics Question : What is the frequency?
Two trumpet players are trying to tune their instruments. When they are in tune, they will both be playing the same note and no beats will be heard. The more experienced player plays a note with a frequency of 520 Hz. When the second musician begins to play, the note sounds lower and they can hear 20 beats in 4.0 s. With what frequency is the second trumpeter playing?
1 AnswerPhysics3 years ago