Answer:
B. t = 0.250s
Explanation:
A. An image with the sketch of the bat emitting a sound, which reflects on a surface and return to the bat is attached below.
B. In order to calculate the time that the pulse emitted by the bat, return to the bat, you first calculate the time that pulse takes to arrive to the object.
You use the following formula:
(1)
x: distance to the object = 43m
t: time = ?
v: speed of sound beat = 343 m/s
You solve the equation (1) for t:
The time on which the bat hears the echo is twice the value of t, that is:
The time on which bat heart the echo of its sound, from the moment on which bat emitted it, is 0.250s
The apple is lifted by 1.1 m
<u>Explanation</u>:
- Given that, mgh = 2 J and mass of apple = 180g
- Step 1: convert grams to kg as work is given in SI units.
180 g = 0.18 kg
- Step 2: substitute in the formula for work done.
0.18 * 10 * h = 2
- Step 3: calculate the value of h from this formula.
h = 2/1.8
h = 1.11 m
Answer:
Watershed should be your answer!
Answer:
270 m
Explanation:
We can find the distance travelled by the car by using the following suvat equation:
where
s is the distance travelled
u is the initial velocity
v is the final velocity
t is the time
For the car in this problem,
u = 0
v = 45 m/s
t = 12 s
Substituting into the equation, we find:
Answer:
1.Animal feed is food given to domestic animals in the course of animal husbandry
2.) Roughages B) Concentrates C) Feed supplements and Feed additives
3. Feed grains
4.pliers, vacuum lifters, magnetic lifters, and stock positioners
Explanation:
<u>1.Animal feed is food given to domestic animals in the course of animal husbandry</u>
<u>2.) Roughages B) Concentrates C) Feed supplements and Feed additives</u>
<u>3. Feed grains </u>
<u>4.pliers, vacuum lifters, magnetic lifters, and stock positioners</u>
