Answer:
The sweater will move towards you with a force of 35 N
Explanation:
In this problem, we have two forces acting on the sweater:
- A force of 65 N towards you
- A force of 30 N acting towards your brother
We can choose the direction "towards you" as positive, so that we can write the two forces as follows
Therefore, the net force acting on the sweater will be
And the positive sign (+) indicates that the direction of the net force is towards you, so the sweater will move towards your direction.
Answer:
s(t)=7t
Explanation:
We are given that
Length of side of square initially=0 cm
Side of square increasing at the rate=7 cm/s
We have to find the formula to express the side length of the square s(in cm) in terms of the number of seconds t.
According to question
Taking integration on both sides then, we get
Substitute t=0 and s=0
Now, substitute the value of C then, we get
s(t)=7t
This is required formula that express the side length of the square s(in cm) in terms of the number of seconds t, since the square's side length began growing.
Answer:
carbon has four unpaired electrons in its valence shell . hydrogen having one unpaired electron in its valence shell comes to bond with carbon by sharing a pair of electrons .since carbon needs 4 electrons to be stable, 4 hydrogen atoms take part in the bond . It's a covalent bond because the difference between the electronegativity of carbon and hydrogen is quite small .
Answer:
Option B
Explanation:
A gaseous, highly reactive non-metal
Answer:
Velocity is 3.02 m/s at an angle of 53.13° below X-axis.
Explanation:
Let unknown velocity be v.
Here momentum is conserved.
Initial momentum = Final momentum
Initial momentum = m x 6i + m x 0i = 6m i
Final momentum = m x (4.8cos 30 i + 4.8sin 30 j) + m x v = 4.16 m i + 2.4 m j + m v
Comparing
4.16 m i + 2.4 m j + m v = 6m i
v = 1.84 i - 2.4 j
Magnitude of velocity
Direction,
Velocity is 3.02 m/s at an angle of 53.13° below X-axis.