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Using a periodic table, identify the element whose atoms have 11 protons. Is it a metal, a nonmetal, or a metalloid? Write one or two sentences describing how an atom of this element changes when it forms an ionic bond.
a homogeneous one-speed bare reactor has a cylindrical configuration. determinea the radius and height of the reactor
If you allow ice to melt at room temperature, what is the state of molecules in the liquid water?
A hot-air balloon is ascending at the rate of 12 m/s and is 84 m above the ground when a package is dropped over the side. Explain how long does the package take to reach the ground?
Calculate the speed of the second ship with respect to Earth if it is fired in the same direction the first spaceship is already moving
A 100 gram bead is free to slide a long a piece of 0.8 m long string ABC. the ends of the string are attached to a vertical rod at point A and B, which are o.4m apart. when the rod is rotated, BC is Horizontal and equals to 0.3m. (a) what is the t..
You are standing at x=9.0km Lightning bolt 1 at x=0km and lightning bolt 2 at x=12.0km Both flashes reach your eye at the same time. what is the time difference between the two flashes
The passengers in a roller coaster car feel 50% heavier than their true weight as the car goes through a dip with a 40m radius of curvature. What is the car's speed at the bottom of the dip
A point moves along a circle of radius 4 cm.The distance x is related to time t by x =ct3 ,where c =0.3cm/s3.Find the normal and tangential acceleration of the point at the instant when its linear velocity is v =0.4 m/s.
What is the radius of the circular track?
A block of mass 9.0 kg is placed on a horizontal table and is connected to a second hanging block with mass M by a cord passing over a frictionless pulley. find the maximum mass M for which system will stay at rest
How far away can a human eye distinguish two car headlights 1.8 m apart? Consider only diffraction effects and assume an eye pupil diameter of 5.5 mm and a wavelength of 550 nm.
A string on a musical instrument vibrates in its fundamental mode with nodes on either end. The length of the vibrating segment is 0.39 m. The maximum transverse velocity at a point in the middle of the string is 3.8 m/s and the maximum transverse ac..
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