Answer:
B
Explanation:
the sound waves cause the eardrum to vibrate
the answer is b............
Answer:
The correct answer will be
1. Inversion
2. 20-25 minutes
Explanation:
The injuries of the ligaments of the ankle are common among athletes like the anterior tibiofibular ligament sprain (AFTL) or calcaneofibular ligament (CFL) which are caused by the inversion of the flexed foot.
These cases of ankle sprains are treated with the rest and applying ice to the injured area for approximately 20-25 minutes repeated for 3-4 times per day.
Thus, Inversion and 20-25 minutes are the correct answer.
Answer:
It is given that a particle covers 10m in first 5s and 10m in next 3s. so using the equation of motion
Case I
s=ut+
2
1
at
2
10=5u+
2
1
a(5)
2
20=10u+25a
4=2u+5a..............(1)
Case 2
In next 3s the particle covers more 10m distance. So
20=8u+
2
1
a(8)
2
5=2u+8a.........(2)
On solving equation (1) and (2)
4=2u+5a
5=2u+8a
a=
3
1
m/s
2
Put the value of a in equation (1)
u=
6
7
m/s
Now to find distance in next 10 s. total time will be 10s
s=
6
7
×10+
2
1
×
3
1
×(10)
2
s=28.33m
Distance travelled in next 2 sec
s=28.33−20=8.33m
