Answer: The mass of ball is 10 grams.
Explanation:
Given : Kinetic energy = 4.5 J
Velocity = 30 m/s
The formula for Kinetic energy is as follows.
where,
K.E = Kinetic energy
m = mass
v = velocity
Substitute the values into above formula as follows.
Thus, we can conclude that the mass of ball is 10 grams.
Heya!!
For calculate force, lets applicate second law of Newton:
<u>Δ Being Δ</u>
F = Force = ?
m = Mass = 50 kg
a = Aceleration = 7,2 m/s²
⇒ Let's replace according the formula:
⇒ Resolving
Result:
The force is <u>360 Netwons.</u>
Good Luck!!
Answer:
a)1mile=1609.344m
b)speed =om/s
c)om/s towards B
d)53.6448m/s
Explanation:
I viewed the question generally and that is what I thought of
Answer: 0.9264 kg
Explanation: [I'll use "cc" for cubic centimeter, instead of cm^3.
The volume is 6cm*4cm*2cm = 48 cm^3 (cc).
Density of Au is 19.3 g/cc
Mass of gold = (48 cc)*(9.3 g/cc) = 926.4 grams Au
1 kg = 1,000 g
(926.4 grams Au)*(1 kg/1,000 g) = 0.9264 kg, 0.93 kg to 2 sig figs
At gold's current price of $57,500/kg, this bar is worth $53,268. Keep it hidden from your lab partner (and instructor).