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An object at rest explodes into three pieces. Two of them are equal in mass and break off at an angle of 88.7° to each other, both with a speed of 33.4 m/s. The last piece has four times as much mass as each of the other pieces. What is the magnitude of the velocity of the last piece?
As morning sunlight falls on a tethered helium balloon, it expands from a volume of 1.10 cross 103 m3 to a volume of 1.17 cross 103 m3. how much does the helium's internal energy increase
A 10-kg cement block moving horizontally at 2.0 m/s plows into apillow and comes to a stop in 0.5s. What is the average impact force on the pillow
A brick is initially 8.20 cm high and an aluminum can is originally 8.21 cm high. By how much must their temperatures be raised in order for the brick and the can to have exactly the similar height?
A spring (k = 75 N/m) has an equilibrium length of 1.00m. if the mass is not attached to the spring, how far up the slope will the mass move before coming to a rest
an empty hollow metal sphere has a potential of 160 v with respect to ground defined to be at v 0 and has a charge of
a singly ionized oxygen atom moves at 9000ms in a circular path perpendicular to a 0.85t magnetic field. find the
You are standing on the ground at the origin of a coordinate system. An airplane flies over you with constant velocity parallel to the x axis and at a constant height of 9.00 103 m. At t = 0, the airplane is directly above you so that the vector l..
Three people pull simultaneously on a stubborn donkey. Jack pulls eastward with a force of 83.7 N, Jill pulls with 91.9 N in the northeast direction, Find the magnitude of the net force the people exert on the donkey
A pipe of 20 cm diameter is carrying a discharge of 0.1 m3/sec. If the diameter of the pipe is reduced to 5 cm at its end, calculate the velocity and velocity head at the pipe outlet.
1. you place your lunch leftovers in the refrigerator. suppose the refrigerator needs to remove 1.4370e4 j of thermal
A 1.6 mL syringe has an inner diameter of 5.8 mm, a needle inner diameter of 0.25 mm, and a plunger pad diameter (where you place your finger) of 1.0 cm. A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100.
In a head-on collision, the car stops in 0.23 {rm s} from a speed of 17 {rm m}/{rm s}. The driver has a mass of 77 {rm kg}, and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat belt during that fract..
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