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A set of crash tests consists of running a test car moving at a speed of 13.0 m/s (28.6 m/h) into a solid wall. Strapped securely in an advanced seat belt system, a 55.0 kg (121.0 lbs) dummy is found to move a distance of 0.660 m from the moment the car touches the wall to the time the car is stopped. Calculate the size of the average force which acts on the dummy during that time.
A sound wave moving through water has a frequency of 256Hz and a wavelength of 5.77m.What is the speed of sound in water.
Assume the Earth is in uniform cicular motion about the sun. Explain how to determine the angular velocity of the Earth
While John is travelling along an interstate highway, he notices a 139 mi marker as he passes through town. Later John passes a 116 mi marker. What is the distance between town and John's current location.
Two wires of the same cross-sectional area and length, but made of different materials, are connected in series. what is the resistivity of the other material
A race car starting from rest accelerates at a constant rate of 6.50 m/s2. What is the velocity of the car
What percentage of the neutrons would not interact if the concrete slab were made 45.0 cm thick? How many centimeters thick would the concrete need to be so that 12.0 per cent of the neutrons are transmitted.
A horizontal 792-N merry-go-round is a solid disk of radius 1.43 m, Find the kinetic energy of the disk after 2.92 s
If the ultimate shear strength of steel is taken to be 2.50x 10^9 Pa, what force is required to punch through a steel plate 2.2cm thick? Assume the superhero's fist has cross-sectional area of 8.00x 10^1 cm2 and is approximately circular.
A generator connected to an RLC circuit has an rms voltage of 130V and an rms current of 33mA, what is the inductive reactance of the circuit
What is the resultant velocity of the motor boat. What distance downstream does the boat reach opposite shore.
Consider a fusion reaction in which a proton fuses with a neutron to form a deuterium nucleus. How much energy is released in this reaction
A planet can have an atmosphere if the escape speed of the planet is 6 times larger than the thermal speed of molecules in the atmosphere. What is the radius of this object's orbit around the sun
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