PHYSICS HIGH SCHOOL

two bullets have masses of 0.004 kg and 0.008 kg, respectively. Both are fired with a speed of 60.0 m/s. which bullet has more kinetic energy?​

Answers

Answer 1
Answer:

Answer:

eah

I don't believe in destiny

I just do what's best for me

Don't listen to my enemies

They're just full of jealousy

Duh

This legacy

You gon see what's left of me

You gon see success in me

You ain't seen the rest of me

I just wanna be the best at what I know

Better than the rest just watch me grow

Put me to the test and watch me go

This is my quest, I'ma make it known

They call me obsessive, oh I know

Call me selective with my notes

Call me agressive with my flow

Call me offensive even though

Explanation:

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In a closed system, a cart with a mass of 1.5 kg is rolling to the right at 1.4 m/s, while another cart of mass 1.0 kg is rolling to the left at the same speed. What is the total momentum of the system of two carts?a. 0.0 kgm/s

b. 0.50 kgm/s

c. 0.70 kgm/s

d. 3.5 kgm/s

Answers

Answer: The correct option is (c.).

Explanation:

Mass of the cart A= 1.5 kg

Velocity of Cart A = 1.4 m/s towards right

Mass of the cart B = 1.0 kg

Velocity of Cart B = 1.4 m/s towards left

Momentum (P)= Mass × Velocity

P_A=1.5 kg* 1.4 m/s=2.1 kg m/s

P_B=1.0 kg* (-1.4m/s)=-1.4 kg m/s

(Negative sign means velocity of the cart is in opposite direction of that of the cart A)

Total Momentum =P_A+P_B=2.10 kg m/s-1.40 kg m/s=0.70 kg m/s

Hence, the correct option is (c.).
the momentum is equal to m*v
m is mass
v is speed
so 1.5 kg*1.4m/s + 1 kg*1.4m/s
2.5kg*1.4m/s
3.5 kgm/s
hope it helps

A friend insists that electric current is the same as electrical energy. Work with a partner to develop a rebuttalagainst your friend's misconception.

Answers

Answer: The electrons flowing through the wire are referred to as a quantity of electricity, and the flow of electricity is referred to as “an electric current.”

Explanation: Hope it Helps have a blessed day

1) A force of 28 N stretches a very light idealspring 0.71 m from equilibrium. What is the
force constant (spring constant) of the spring?
A) 39 N/m
B) 22 N/m
C) 46 N/m
D) 31 N/m

Answers