Calculate the speed of a periodic wave that has a wavelength of 2.0 m and a frequency
of 3.0 Hz.
O 12 m/s
O 5 m/s
O 2 m/s
0 6 m/s

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

Using proper grammar, spelling, and punctuation, write at least one 5 sentence paragraph describing 3 ways we use the elements of the electromagnetic spectrum (ems) in our everyday lives.

Asmall electric heater, immersed in 80g of water in a calorimeter of 40j/k raises the temperature from 10.5 degree celsius to 25 degree celsius in 12 minutes. using the same apparatus with 50g of oil instead of water, it is found that the temperature of oil rises from 7 degree celsius to 27 degree celsius in 10 minutes. find specific heat capacity of the oil.