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Find the following:
a. Position
b. Velocity
c. Acceleration
How high above the ground does it go?H ow much time does he have to get out of its way before it returns to the height of the top of his head, 1.93 m above the ground?
(a) What are the horizonal and vertical components of the ball’s initial velocity?
(b) At which time will the ball reach the highest peak of the trajectory?
(c) How long will the ball stay in flight? What is the total time of flight?
(d) What is the ball’s maximum height during its flight?
What was Max Planck studying when he developed his early version of quantum mechanics
How many orders will be visible if the wavelength of the incident radiation is 4800 Å and the number of lines on the grating is 2500 lines per inch.
A soccer goal, found in a city park, is made of tubing that supports an odd shaped hanging net behind the goal, but has a rectangular opening in front. The height of the opening is 2.5 m and the width is 3.2 m. If a uniform E-field, with a magnitude of 0.1 N/C, passes through the goal from the front to the back, entering at 90º to the plane of the goal opening, Calculate the flux through the net? Also, calculate the flux through the net if the E-field enters the goal at a 60° angle to the plane of the front of the goal. In both cases, assume that there is no charge found inside the goal itself.
You are standing in front of two side-by-side loudspeakers playing sounds of the same
frequency. Initially, there is almost no sound at all. Then one of the speakers is moved slowly
away from you. The sound intensity increases as the separation increases, reaching a maximum
when the speakers are 0.75 m apart. As the speaker continues to move, the sound starts to
decrease.
a. Draw a picture of the situation when the speakers are side-by-side. Show the
interference pattern.
b. Draw a picture of the situation when the speakers are 0.75 m apart. Show the
interference pattern.
c. What is the distance between the speakers when the sound intensity is again a
minimum?
