Answer:
the motorcycle travels 522 miles in 18 seconds Explanation: 29 x 18 is 522 I'm pretty sure that's what it was asking but I don't know
Well you do air × pressure to get force
Answer:
a) 0.15rad/s
b) 0.26m/s
Explanation:
a) To find the angular speed it is necessary to consider the conservation of energy. after the rock is dropped by the girl, the kinetic energy of the rock must equal the rotational energy of the merry-go-round joint the girl. In other words you have
rotational energy and kinetic energy will given by:
I: rotational inertia
w = angular speed
m: mass of the block
m_g: mass of the girl
R: radius of the merry-go-round
By replacing you have:
the angular speed is 0.15rad/s
b) the linear speed is given by:
hence, the linear speed of the girl is 0.26m/s
Wavelength = (speed) / (frequency)
The speeds of the two possible signals are equal, just like
all other forms of electromagnetic radiation.
Wavelength of 895 MHz = (3 x 10⁸ m/s) / (8.95 x 10⁸/s) = 0.335 m
Wavelength of 2560 MHz = (3 x 10⁸ m/s) / (2.56 x 10⁹/s) = 0.117 m