A uniform bridge span weighs 70.0 kN and is 40.0 m long. An automobile weighing 15.0 kN is parked with its center of gravity located 15.0 m from the right pier. What upward support force does the right pier provide?
a. 40.6 kN b. 51.3 kN
c. 25.6 kN d. 44.4 kN
e. 42.5 kN
d
You might also like to view...
Which of the following statements is true of the analysis called helioseismology?
A) The solar interior is observed using the light that emerges from below the photosphere. B) The cause of the 22-year cycle of sunspots is studied using the Sun's unchanged magnetic field. C) The vibrations in the Sun are used by solar astronomers to explore its depths. D) The unaltered electron orbits are detected when an atom is in a magnetic field.
What is meant by spectral resolution?
A) It is a measure of how much energy an object emits in different parts of the electromagnetic spectrum. B) It is a measure of how close two spectral lines can be and still be distinguishable. C) It is a measure of how close two stars can be in the sky and still be distinguishable. D) It is the same as angular resolution but applied to telescopes operating at different wavelengths.
Which of the following gases is a trace natural constituent of the air?
a. CO b. SO2 c. CO2 d. NO2
How much energy does a 100 watt light bulb use in 1 hour? Express your answer in (a) joules and in (b) kilowatt-hours. (c) Also find how much money it costs if electricity sells for 10 cents per kW-h