Physics, 05.07.2019 03:30 cocoarockford
A3 kg toy car with a speed of 9 m/s collides head-on with a 2 kg car traveling in the opposite direction with a speed of 3 m/s. if the cars are locked together after the collision with a speed of 4.20 m/s, how much kinetic energy is lost?
Answers: 2
Physics, 21.06.2019 21:40
Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds back at essentially the same speed. if the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?
Answers: 3
Physics, 22.06.2019 00:10
The summit of chimborazo, in ecuador, which is at a distance of about 6,384 km from the earth’s center. the bottom of the mariana trench, in the western pacific ocean, which is nearly 6,370 km from the center of the earth. on the surface of earth on the equator line.
Answers: 2
Physics, 22.06.2019 04:50
Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves
Answers: 2
Physics, 22.06.2019 06:00
The frequency of vibrations of a vibrating violin string is given by f = 1 2l t ρ where l is the length of the string, t is its tension, and ρ is its linear density.† (a) find the rate of change of the frequency with respect to the following. (i) the length (when t and ρ are constant) (ii) the tension (when l and ρ are constant) (iii) the linear density (when l and t are constant) (b) the pitch of a note (how high or low the note sounds) is determined by the frequency f. (the higher the frequency, the higher the pitch.) use the signs of the derivatives in part (a) to determine what happens to the pitch of a note for the following. (i) when the effective length of a string is decreased by placing a finger on the string so a shorter portion of the string vibrates df dl 0 and l is ⇒ f is ⇒ (ii) when the tension is increased by turning a tuning peg df dt 0 and t is ⇒ f is ⇒ (iii) when the linear density is increased by switching to another string df dρ 0 and ρ is ⇒ f is ⇒
Answers: 3
A3 kg toy car with a speed of 9 m/s collides head-on with a 2 kg car traveling in the opposite direc...
English, 18.11.2020 22:20
Mathematics, 18.11.2020 22:20
Mathematics, 18.11.2020 22:20
History, 18.11.2020 22:20
Mathematics, 18.11.2020 22:20
Health, 18.11.2020 22:20
Mathematics, 18.11.2020 22:20
Mathematics, 18.11.2020 22:20
English, 18.11.2020 22:20
Mathematics, 18.11.2020 22:20
English, 18.11.2020 22:20