Hi there!
We can use the following equation to solve for displacement:
vf² = vi² + 2ad, where:
vf = final velocity
vi = initial velocity
a = acceleration
d = displacement
Since the car will come to rest, vf = 0, so:
0 = vi² + 2ad
Plug in the given values:
0 = 25² + 2(-5)d (Breaking is a negative acceleration in this instance)
Solve:
0 = 25² - 10d
10d = 625
d = 62.5m
Subtract from the total distance from the car to the tree:
65 - 62.5 = 2.5m
Yes I can help describe it but I need to see the graph that’s on top
Answer:
D float.
Explanation:
Here, neutrally buoyant in fresh water
Now,
since the specific gravity of salt water is higher than the specific gravity of the fresh water therefore, the salt water will apply more buoyant force on the object.
And as the object is neutral in fresh water, more buoyant force will make the object float in the salt water.
Answer:
option c
Explanation:
The disadvantage of the radio signal is option c) which is radio waves create electrical interference. The radio-wave interference also called as electromagnetic interference is the phenomena that occurs due to the radio waves. This phenomena affects the electric circuits. The effects includes the electromagnetic induction, conduction or electrostatic coupling.
Answer:
0.695s
Explanation:
From Hooke's law, the restoring force is given has
F = -ky .......1
Where F is the force, y is the spring displacement and k force constant of the spring.
Also recall,
F=mg ............ 2
Where m is the mass of object, g is the acceleration due to gravity.
Equating 1 and 2
Ky = mg
Given that g=9.8m/s2 , y is 3.4cm and g is 8g
K×3.4/100m =8/1000kg × 9.8m/s2
K= ( 0.008kg × 9.8m/s2 ) ÷ 0.034
K= 0.0784÷0.035
K=2.24N/m
Mass ofvthe second object is 25g =0.025kg
Period of oscillation T
T=2π√m/k
T=2×3.142√0.025/2.24
T=6.284√0.0111
T=0.659seconds
