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A solid block is suspended from a spring scale. When the block is in air, the scale reads 37.1 N, when immersed in water the scale reads 32.2N, and when immersed in oil the scale reads33.0 N.
a) What is the density of the block?
b) What is the density of the oil?
Hakeem throws an 8.50 g ball straight down from a height of 2.0 m. The ball strikes the floor at the speed of 7.5 m/s. What was the initial speed of the ball? Suppose that air resistance is negligible.
What is the horizontal distance the airplane engine falls. find out the time that was recorded on Earth.
Suppose a 61 kg boy and a 43 kg girl use a mass less rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find the magnitude of the acceleration of the boy toward the girl.
The atomic number of lead is 82. The alpha particle is a helium nucleus, with atomic number 2.
You have a grindstone ( a disk) that is 84.0 kg, has a .307-mradius, and is turning at 104.0 rmp, How many turns wil the stone make before coming to rest
An electric toaster operating on 110.8 volts draws a current of 5 amperes. What is the resistance of the toaster
A rod (length = 80 cm) with a rectangular cross section (1.5 mm x 2.0 mm) has a resistance of 0.20 ohms. What is the resistivity of the material used to make the rod
A 2.46 x 10-2-kg block is resting on a horizontal frictionless surface and is attached to a horizontal spring whose spring constant is 110 N/m. The block is shoved parallel to the spring axis and is given an initial speed of 10.4 m/s, while spring is..
Starting from one oasis, a camel walks 50 km in a direction 30° south of west and then walks 30 km, What is the distance in km between the two oases
person 1.6 m tall stands 5.2 m from a reflecting globe in a garden. How large is the person's image
A Force F= (6xi+ 5yj), where F is in newtons and x and y are in meters, acts on an object as the object moves in the x direction, Find the work W = integral (F · d vector r) done by the force on the object
In open heart surgery a much smaller amount of energy will defibrillate the heart. Find the amount of stored charge
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