Ablock is held at rest against a wall by a force of magnitude f exerted at an angle theta from the horizontal, as shown in the figure above. let fg be the gravitational force exerted by earth on the block, fn be the normal force exerted by the wall on the block, an ff be the frictional force exerted by the wall on the brick. which of the following statements about the magnitude of the forces on the block must be true? select two answers.
a.) f = fg / sin(theta)
b.) fcos(theta) = fn
c.) fsin(theta) = fg + or - ff
d.) f = fg + fn + or - ff

Give your knowledge of these things in your paper, you will compare and contrast analog and digital signals to determine which is more reliable for encoding and transmitting information. you’ll compare these features: signal shape numerical values for signal measurements amount of data that can be transmitted energy requirements privacy and security (ability of the signal to be encoded in a secret code) clarity of signal in the space provided, write down what you already know about any of these features. if you’re not sure, write down questions you might have about the features.

Which statement is best supported by the information in the chart? wave y is moving the fastest. wave x is moving the fastest. all of the waves are moving at the same speed. all of the waves have the same value of wavelengths per second.

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.