Department of education
According to the U.S. Department of Education, 42.8% of 3-year-olds are enrolled in day care. What is the probability that a randomly selected 3-year-old is enrolled in day care?
Formula: P(E) = N(E)/N(S)
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An electric motor has a 920-turn coil on its armature. The coil is circular with diameter 19 cm and carries 11.5 A. Find the maximum torque on the coil when it rotates in a 1.90 T magnetic field.
If saturated steam vapor enters the turbine and leaves it at 50 kPa, and if all of the calculate the efficiency and quality of steam at discharge from the turbine if the boiler pressure is 1 MPa.
A resting ball of mass 552g is struck horizontally by a mallet imparting an impulsive force give by F(t)= -552 for t1<t<t2 and F=0 otherwise. Here F is in Newtons and t is in milliseconds with t1=0.62ms and t2=3.04t1. What is the total impul
A 6.0-g sample of [Ni(H2O)6]Cl2 is dissolved in aqueous solution. If an excess of ethylenediamine (en) is added to the solution, solid [Ni(en)3]Cl2. H2O forms. What is the theoretical yield of product from the reaction?
Determine the horizontal equilibrium force P that must be applied to the handle. Determine the x, y, z components of reaction at the journal bearing A.
A 35-kg crte rests on ahorizontal floor, and a 65-kg person is standing on the crate. Determine the magnitude of the normal force that the floor exerts on the crate.
If the pressure at the centerline is measured to be 470 kPa and 440 kPa before and after the reducer, respectively, determine the irreversible head loss in the reducer. Take the kinetic every correction factors to be 1.05.
a) Calculate the impulse delivered to the ball during impact b) If the ball is in contact with the slab for 1.216 x 10^-3 s, find the average force on the ball during impact.
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