Thorium -232 decays by alpha decay. Part of the nuclear equation is shown below. Fill in the blank with a number.
232 90 th -4 2 he + (blank) 88 ra=

1/0.14nm = 10^10/1.4 a lot

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

the speed of the cart after 3 seconds of low fan speed is ⇒ 54.0 cm/s.

the speed of the cart after 5 seconds of medium fan speed is ⇒ 120.0 cm/s.

the speed of the cart after 2 seconds of high fan speed is ⇒ 64.0 cm/s. 

just did the lab.