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You're driving behind an ambulance on the highway at a speed of 65 mph. If the speed of the ambulance is 60 mph, will the siren sound to you as if its pitch is higher, lower, or the same as it would if both you and the ambulance were stationary This is what I have so far: The pitch would be higher because you have the faster velocity so the sound waves take less time to travel over the period.
A typical lightning flash delivers about 30C of negative charge from cloud to ground. How many electrons are involved
The aorta carries blood away from the heart at a speed of about 40 cm/s and has a radius of approximately 1.1 cm. find the approximate number of capillaries in the human body
An oscillator vibrating at 1220Hz produces a sound wave that travels through an ideal gas at 325 m/s when the gas temperature is 22.0 ?C. What should the gas temperature be to achieve this wavelength
What is the kinetic energy of a 0.5-kg object moving at a constant speed of 2 m/s?
An ice hockey puck is sliding along the vertical wall as shown on the picture (top view shown). Puck is moving in the horizontal plane only. Find the velocity of the puck at that point
A 30.0kg ball of clay traveling east at 2.50m/s collides and sticks together with a 30.0kg ball of clay traveling north at 2.50m/s . What is the speed of the resulting ball of clay?
The solid shaft in is made from brass that has an allowable shear stress = 100 MPa and a shear modulus of elasticity G = 39 GPa. what is the required diameter of the shaft
The coil of a galvanometer has a resistance of 19.8 ?, and its meter deflects full scale when a current of 6.30 mA passes through it. What is the maximum current that this ammeter can read
The outside mirror on the passenger side of a car is convex and has a focal length of -8.5 m. Find the image distance of the truck
The Large Hadron Collider, or LHC, to be completed later this year, accelerates protons around a nearly circular track of circumference 26.66 km to a momentum of up to 3.74e-15 kg m/s, For the same magnetic field as in part (a), what is the momentu..
You place 106 moles of hydrogen gas in a balloon of volume 2.4 m3, and find the pressure to be 1.3 times atmospheric pressure. What is the typical speed of a hydrogen molecule
At the low point in it swing, a pendulum bob with a mass of 0.46 kg has a velocity of 2.2 m/s. What is its kinetic energy at the low point
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