Firstly let us get the time down to minutes from hours. Then the calculation will become easy.
1 hour and 45 minutes = (60 + 45) minutes
= 105 minutes
So
The distance traveled by the car in 105 minutes = 98 miles
Then
The distance traveled by the car in 60 minutes = (98/105) * 60 miles
= 5880/105 miles
= 56 miles
So the average speed of the car as can be seen from the above deduction is 56 miles per hour.
So u wanna use density is mass/volume, mass can be found by a weighing scale but for volume u wanna fill a measuring cylinder with water and note the initial volume of water in it, (u can decide how much water to fill in it) and then u place the chess piece in the measuring cylinder, this will cause the water to rise and then u measure the final volume of water and do final volume - initial to find volume
Answer:
3. 
Explanation:
Energy of volume contained in a dam is given by
where,
A = Horizontal surface area of the barrage
= Density of water
g = Acceleration due to gravity = 9.81 m/s²
h = Vertical tidal range,
It can be seen that
Hence, the energy is proportional to
When the car moves and makes a sound that is louder that when the car is just sitting there
Answer:
(a) 8Ω (b) Ratio = Parra/P8 ohm = 1
Explanation:
Solution
Recall that,
An high-fidelity amplifier has one output for a speaker of resistance of = 8 Ω
Now,
(a) How can two 8-Ω speakers be arranged, when one = 4-Ω speaker, and one =12-Ω speaker
The Upper arm is : 8 ohm, 8 ohm
The Lower arm is : 12 ohm, 4 ohm
The Requirement is = (16 x 16)/(16 + 16) = 8 ohm
(b) compare your arrangement power output of with the power output of a single 8-Ω speaker
The Ratio = Parra/P8 ohm = 1
