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The speed of the vaccine (p=1100 kg/m3) is held in a reservoirwhere a high pressure pushes it out. The pressure on the surface ofthe vaccine in one gun is 4.1x10^6 Pa above the atmosphericpressure outside the narrow opening. The dosage is small enoughthat the vaccine's surface in the reservoir is nearly stationarydurning an inoculation. The vertical height between the vaccine'ssurface in the reservoir and the opening can be ignored. Find the speed at which the vaccine emerges?
a plank of mass m and length L is attached to a wall at one end, What is the magnitude of the force f exerted on the plank by the wall in terms of D, m, L
A nucleus moving at 0.6c through the lab decays, emitting a photon in the forward direction. With what speed does the photon travel
With a 2 meter lever, the fulcrum is 30 cm from the load of 200 pounds. How much "effort" force will be needed to lift it, Which type of lever describes a wheelbarrow
Transmission electron microscopes that use high-energy electrons are employed in many areas including the study of biology samples (like a virus) and nanoscience research and development (allow particles and carbon nanotubes, for example).
Assume that you are an observer located at a latitude of 40degrees north (on Earth). Draw a fully labeled diagram showing from your vantagepoint: What is the altitude or elevation of Polaris?
A person with a near-point distance of 37 cm is able to get a usable magnification of 15 with a particular magnifying glass. What is the friend's near-point distance
A 12.0 kg box is pulled along a horizontal surface by a force Fp at a 30° angle above the horizontal. Calculate the acceleration of the box assuming a force of magnitude 45 N is applied at the 30° angle
A baseball has a velocity of 40.2 m/s (89.9 mi/h), directed horizontally, as it is released by a pitcher. Calculate the ball's instantaneous acceleration just before it is released
Bob connects a lamp of 34 Ohms resistance across a car battery of 12 volts. what would be the power dissipated by the lamp
A 2.8{\rm kg} block of wood sits on a table. A 3.0 {\rm g} bullet, fired horizontally at a speed of 370{\rm m/s} , What is the speed of the block immediately after the bullet exits
A battery is connected in series with a 0.27-? resistor and an inductor, Find the inductance of the circuit
The impact on light fixture swing
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