Answer:
14m/s
Explanation:
Given parameters:
Radius of the curve = 50m
Centripetal acceleration = 3.92m/s²
Unknown:
Speed needed to keep the car on the curve = ?
Solution:
The centripetal acceleration is the inwardly directly acceleration needed to keep a body along a curved path.
It is given as;
a = 
a is the centripetal acceleration
v is the speed
r is the radius
Now insert the parameters and find v;
v² = ar
v² = 3.92 x 50 = 196
v = √196 = 14m/s
Answer:The Doppler effect is a change in the frequency of sound waves that occurs when the source of the sound waves is moving relative to a stationary listener.
As the source of sound waves approaches a listener, the sound waves get closer together, increasing their frequency and the pitch of the sound. The opposite happens when the source of sound waves moves away from the listener.
Explanation:
During the period of 2 hours, the yeast ate the sugar, and generated Carbon-Dioxide gas and alcohol. This is the process that causes bread-dough to rise, and eventually produces stuff that can be distilled to concentrate the alcohol and make wine or whiskey.
-- If Daniel tied the neck of the balloon, so that nothing could get in r out during the 2 hours, then the mass of the balloon and everything inside it didn't change. The balloon may have inflated slightly ... due to the creation of gas inside that wasn't there before ... just like bread dough. But no mass was created or destroyed inside or outside of the balloon, and none got in or out.
-- If Daniel left the neck of the balloon open, then the mass of the balloon and its contents decreased slightly during the 2 hours. The yeast took carbon and oxygen from the sugar, and used them to make Carbon Dioxide gas. Then the gas flew out through the neck of the balloon to Freedom.
Initially sled is moving with uniform velocity which means the net force must be balanced on the sled
So it is given that applied force on the sled is 200 N and sled is not accelerating so friction force must be 200 N.
Now suddenly it starts with 600 N applied force due to which it will accelerate and this can calculated by Newton's II law
So in this case the sled ill start accelerating with acceleration
I think ur answer would be No
