Answer:
679.2 m/s
Explanation:
The formula for the time of flight of a projectile is given as,
T = 2usinФ/g ......................... Equation 1
Where T = Time of flight, u = initial velocity, Ф = angle of projectile to the horizontal, g = acceleration due to gravity.
make u the subject of the equation
u = Tg/2sinФ....................... Equation 2
Given: T = 69 s, Ф = 30°
Constant: g = 9.8 m/s²
Substitute into equation 2
u = (69×9.8)/(2×sin30)
u = 679.2 m/s.
Hence the initial speed of the projectile is 679.2 m/s
Answer:
here
Explanation:
Copper is commonly used as an effective conductor in household appliances and in electrical equipment in general. Because of its low cost, most wires are copper-plated. You will often find electromagnet cores normally wrapped with copper wire
Answer:
So increasing the voltage increases the charge in direct proportion to the voltage. If the voltage exceeds the capacitors rated voltage, the capacitor may fail due to breakdown of the dielectric between the two plates that make up the capacitor.
Explanation:
A option.
Answer:
V=203 ft/s
Explanation:
answer is available in word document named "attach 1" due to some technical error in maths equation. please find the attached document
Answer:
procedure in which radio waves and a powerful magnet linked to a computer
Explanation:
Listen to pronunciation. (mag-NEH-tik REH-zuh-nunts IH-muh-jing) A procedure in which radio waves and a powerful magnet linked to a computer are used to create detailed pictures of areas inside the body. These pictures can show the difference between normal and diseased tissue.
