A 1200-kg ore cart is rolling at 10.8 m/s across a flat friction-free surface. A crane suddenly drops of ore vertically into the cart. How fast does the cart move just after being loaded with the ore?
A) 5.70 m/s B) 4.20 m/s C) 6.30 m/s D) 3.80 m/s
C
Physics & Space Science
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Only about three comets per year plunge into the Sun and are destroyed
a. True b. False Indicate whether the statement is true or false
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A. +x direction B. -x direction C. +y direction D. -y direction E. +z direction F. -z direction T. The field is zero.
Physics & Space Science
The lifetime of a star is determined by its initial ______________
Fill in the blank(s) with correct word
Physics & Space Science
Classify the following statement as a characteristic
(a) of electric forces only, (b) of magnetic forces only, (c) of both electric and magnetic forces, or (d) of neither electric nor magnetic forces. The force is proportional to the magnitude of the field exerting it.
1.electric forces 2.magnetic forces 3.both electric and magnetic forces 4.neither electric nor magnetic forces
Physics & Space Science