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A Eric is twirling a ball of mass m= 0.150 kg attached to a lightweight stung in a vertical circle. If the total energy of the system is conserved, by what factor does the tension on the string increase at the bottom compared with the top of the circle?
Four equal masses M are spaced at equal intervals, l, along ahorizontal straight rod whose mass can be ignored. find the momentof inirtia of the system about this axis
A proton travels with a speed of 2.9×10^6 m/s at an angle 44 degrees with a magnetic ?eld of 0.99 T pointed in the +y direction. What is the magnitude of the magnetic force on the proton
You have landed on an unknown planet, Newtonia, and want to know what objects will weigh there. Find what does the tool weigh on Newtonia
a electrons are accelerated from rest across 127.75 kv. they are then directed at two slits which are the size of a
A well-insulated rigid container contains two 10 L compartments initially at 300 K. Each compartment contains argon gas. Determine the final temperature, pressure and volumes of each compartment
These vacua would probably have a Planckian-size cosmological constant and therefore be highly non-classical. Also, how to compare stability of vacua with different number of large dimensions? Comparing cosmological constants doesn't feel to make se..
the weight of a body varies inversely with the square of its distance from the center of earth. assuming that the
The emissivity of her skin is 0.750 and its surface area is 1.30 m2. How much time would it take for her to emit a net radiant energy from her body that is equal to energy contained in this dessert.
a defibrillator consists of a 15.4-microf capacitor that is charged to 8.2 kv.a if the capacitor is discharged in 1.0
A 22.5 g bullet is fired from a rifle. It takes 2.60 10-3 s for the bullet to travel the length of the barrel, find the average net force exerted on the bullet
In the movies we see a car fly off a cliff after being chased by another. In the movies it takes about 1 sec for the vehicle to hit the ground. find the time it takes to collide with the canyon floor
a plane is flying at 120 ms and drops cargo to people 500 meters below. 1where do the people need to stand in relation
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