16 Multiple Choice 0/1 A toy cannon of mass 1.0 kg is initially at rest on a horizontal surface when it launches a 0.07 kg projectile with a velocity of 10 m/s at an angle of 60° above the horizontal. What is the speed of the 1.0 kg cannon immediately after the projectile released, assuming that friction is negligible? 0.25 m/s 0.35 m/s 0.43 m/s 0.50 m/s​

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.

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