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Answer the following questions regarding whether life ever existed on Mars. Include references.
Do we know whether Mars ever had life at any time during its past? What argues in favor of the position that it may once have harbored life?
In an organ pipe open at one end and closed at the other, the fundamental frequency emitted is 240 Hz. find the next overtone frequency
The maximum wavelength for which an electromagnetic wave can eject electrons from a platinum surface is 196 nm. When radiation by a wavelength of 156 nm shines on the surface, what is the maximum speed of the ejected electrons?
Transvers waves: Speed of wave on streatched string. Two steel wires are stretched with the same tension. The first wire has a diameter of 0.610 mm and the second wire has a diameter of 0.910 mm
A ball of mass m makes a head-on elastic collision with a second ball (at rest), What is the mass of the second ball
A solid cylider of mass 9.8 kg and radius 28 cm is yoked to a spring as shown. What is the angular frquency of the cylinder rolling back
A rectangular block of ice with dimensions 2 meter by 2 meter by 0.2 meter floats on water. A person weighing 975 Newton wants to stand on the ice. Find would the ice sink below the surface of water
Electromagnetic waves can be shielded with a perfect conductor. What about gravitational fields or waves?
A noisy machine in a factory produces sound by a level of 80 dB. How many identical machines could you add to the factory without exceeding the 90 dB limit?
A flat-bottomed wooden box is 1.5 m wide and 2.5 m long, with sides 1 m high. The box serves as a boat carrying five people as it floats on a pond. The total mass of the boat and the people is 1400 kg. What is the total weight of the boat and the peo..
A 10.0-kg cylinder rolls without slipping across a surface. At an instant when its linear speed is 10.0-m/s, compute its translational kinetic energy
A 300-g mass at the end of an ideal spring vibrates up and down in such a way that it is 2.0 cm above the tabletop at its lowest point and 16 cm above at its highest point. find the speed and acceleration of the mass when it is 12 cm above the tabl..
Calculate the linear speed due to the Earth's rotation for aperson at a point on its surface located at 40 degrees N latitude.The radius of the Earth is 6.40 x 10^6 m
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