A sound wave of wave length. 8 m and a velocity of 330 m/s is produced for. 5 s what is the frequency of the wave

Identify how an electronic motor works.

Look at the potential energy diagram for a chemical reaction. Which statement correctly describes the energy changes that occur in the forward reaction?

Some metal conductor has a resistance of 12ohm. When plugged into a circuit, the amount of heat 144J is released in 12s. What is the voltage at the ends of the conductors?

The Tacoma Narrows Bridge collapsed due to A. beats. B. frequency modulation. C. destructive interference. D. resonance.

a cube of sides 10cm is partly filled with sand of density 3.8g/cm3. If the weight of the sand is 200g, find the height in mm up to which it is filled in the container?

A brick with a mass of 20 kg and a weight of 196 N is released on a frictionless plane at an angle of 30°. What is the acceleration of the brick? A. 4.9 m/s2 B. 5.6 m/s2 C. 8.5 m/s2 D. 9.8 m/s2

7. What are the 3 types of air resistance and explain them?

Which model of the atom first introduced the idea of a nucleus? Question options: Thomson's model Dalton's model Rutherford's model Bohr's model

A gymnast practices two dismounts from the high bar on the uneven parallel bars. during one dismount, she swings up off the bar with an initial upward velocity of + 4.0 m/s.

Your friend, who is age 15 and has a resting heart rate of 70, wishes to start a jogging program. What would you suggest as a proper starting target heart rate? 138 115 178 155