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Adolescents tend to respond with gut reactions to emotional stimuli, while adults are more likely to respond in more rational, reasoned ways. Recent research suggests that this may be because.
Calculate the PRP, PRF, PD, DF, SPL, wavelength, period, and Axial Resolution if a 2 cycle pulse emitted from a 10 MHz transducer if the echo time received was 0.26 ms in soft tissue.
An 30 g rifle bullet traveling 370 m/s buries itself in a 4.8 kg pendulum hanging on a 2 m long string, which makes the pendulum swing upward in an arc. Determine the maximum vertical displacement
If one end of a heavy rope is attached to a light rope and wave is sent down the heavy rope. What will happen to the speed, frequency and wavelength as it changes to the light rope?
What is the strength of the magnetic field required to exactly balance the weight of the proton and keep it moving horizontally?
A bowling ball of mass M = 7.2 kg and radius R = 0.11 m and a billiard ball of m = 0.38 kg and r = 0.028 m may each be treated as uniform spheres. What is the magnitude of the maximum gravitational
The coefficient of kinetic friction between the plastic and the roof is 0.400. The Frisbee slides 10.0 m up the roof to its peak, where it goes into free fall, following a parabolic trajectory with
The mass of the box is 51.5 kg. Acceleration due to gravity at sea level is 9.80 m/s2. What is the pressure exerted by the box where it rests?
After the police car passes, the observed frequency of the siren is 455 Hz. Determine the car's speed from these observations.
A pinball spring with a k value of 79.2 N/m is compressd a distance of 3.5 cm. If it launches a pinball at a speed of 1.2 m/s, what is the mass of the pinball?
The anchor line is 40 meters long. Assuming the river has a uniform depth, how deep is the river directly below the boat?
If the ring is initally at 99 celsius, what mass of water at 25 celsius is needed to lower the ring's temperature to 38 celsius.
A sled reaches the foot of a hill at a speed of 6.7 m/s. If the coefficient of kinetic friction between the sled and ground is 0.192, the distance the sled travels before coming to a stop is ____ m
Calculate the the numerical value for the acceleration (Assume g = 9.81 m/s2).
Mr. Kaufman worries that his wife's interactions with the baby may eventually lead the child to (a) cry easily when frustrated, (b) fearfully cling to his mother, (c) become unfriendly toward other
Assuming that the ball's initial velocity was 45 above the horizontal, and ignoring air resistance, what did the initial speed of the ball need to be to produce such a home run if the ball was hit a
A 340-kg sailboat has an acceleration of 0.76 m/s2 at an angle of 63° north of east. Find the magnitude and direction of the net force that acts on the sailboat.
What distance does the car cover in the last 2.0 seconds of its motion? What is the constant speed that characterizes the middle portion of its motion?
Find the time taken for the casting to slide down the plane a distance of 10 m without any external force being applied. Find also, the force required to give the casting an acceleration of 2 m/s2 u
Roger sees water balloons fall past his window. He notices that each balloon strikes the sidewalk 1.1 s after passing his window. Roger's room is on the fifth floor, 25 m above the sidewalk. Assumi
How many revolutions does the baseball make on its way to home plate? For simplicity, assume that the 60 ft path is a straight line.
The fundamental frequency of the standing waves in the portion of the string above the rod is f. Find the mass of the portion of the string above the rod.
At the same time, a stationary trumpeter played the same note. Ballot heard 4 beats/s. How fast was the train moving toward him? The speed of sound in air is 343 m/s .
What frequency is heard by a stationary observer when the engine moves toward him at 25.0m/s is the temperature outside is 40 degrees Celsius, speed of sound 355m/s?
A loudspeaker of mass 22.0 kg is suspended a distance of h = 2.20 m below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.10 m. What is the tensi