Please explain the origin and evolution of the Universe. Start from the Big bang, going through the critical moments for creations of particles, stars and the Solar system. Please try to include the following key words: (a) The Big Bang, (b) Inflation, (c) Spontaneous Symmetry Breaking, (d) Quarks and Leptons, (e) Baryogenesis, (f) Cosmic Microwave Background, (g) Dark matter, (h) Dark energy, (i) Formation of stars, (j) Fate of the Universe. Underline the key words. Do not forget to include the times from the Big bang for the important epochs.    

A string of length L vibrates at its fundamental frequency. The amplitude at a point 1/4L from one end is 5.80cm .

-What is the amplitude of each of the traveling waves that form this standing wave?

Thanks in Advance!!

Write a paragraph of synthesis on how coefficient of static and kinetic plays an important role in determining the price of certain goods that we purchase? [Example: Think about why some running shoes/sneakers are very expensive]. Provide research links

Two 460 g blocks of wood are 2.0 m apart on a frictionless table. A 9.0 g bullet is fired at 420 m/s toward the blocks. It passes all the way through the first block, then embeds itself in the second block. The speed of the first block immediately afterward is 5.2 m/s .

What is the speed of the second block after the bullet stops?

Two charges each of magnitude q = 3 μC are situated at (x,y) = (1m,0) and (x,y) = (0,1m) respectively. The magnitude of the electric field at (x,y) = (0,0), is

Find the energy of an electron in the n = 2 state of hydrogen.
eV

If this electron undergoes a transition to the ground state, what is the energy, in electron-volts, of the photon that is emitted?
eV

You dig a hole in the ground, removing a volume 0.87 m3 of earth. If the density of the earth is 5044 kg/m3 calculate the weight of the earth removed in N, to 2 sf.

5. A sandbag is dropped from a hot air balloon that is 315 m above the ground. When the sandbag is dropped, the balloon is rising at 11 m/s. Find (a) the maximum height reached by the bag, (b) its position (relative to the ground) and velocity 4.3 s after it is released, and (c) when the bag hits the ground. PLEASE GO STEP BY STEP AND WRITE THE EQAUTION SO I UNDERSTAND HOW YOU GOT TO THE SOULTION! :) I AM TRYING TO LEARN THE INFO!

At time t=0 a grinding wheel has an angular velocity of 29.0 rad/s . It has a constant angular acceleration of 29.0 rad/s² until a circuit breaker trips at time t = 2.30 s . From then on, the wheel turns through an angle of 433 rad as it coasts to a stop at constant angular deceleration.

A) Through what total angle did the wheel turn between t=0 and the time it stopped?

Express your answer in radians.

B) At what time does the wheel stop?

Express your answer in seconds.

C) What was the wheel's angular acceleration as it slowed down?

Express your answer in rad/s².

An object at rest explodes into three fragments. The figure shows the momentum vectors of two of the fragments:

• vector P1 is directed along the p_x axis and has a magnitude of 67.0 kg m/s.
• vector P2 is at an angle of 50.0° measured counterclockwise from the positive p_x axis and has a magnitude of 92.0 kg m/s.

What are the p_x and p_y components of the momentum of the third fragment?

Answer question 2!!

1. a boat is bobbing up and down on the water as waves pass underneath it. The depth of the water under the boat oscillates between 3 m and 4 m. The boat is stationary with respect to the shore and it is 2.9s between the crests of successive waves. A person on shore sees the crests of the wave passing by at 2 m/s. what is the distance between crests of this wave?

2. Two ducks are floating close together on the water near the boat in problem 1. When the first duck is on the peak of a passing wave the second duck is 30 cm below it and moving upwards. How far apart are the ducks?

Dario, a prep cook at an Italian restaurant, spins a salad spinner and observes that it rotates 20.0 times in 5.00 seconds and then stops spinning it. The salad spinner rotates 6.00 more times before it comes to rest. Assume that the spinner slows down with constant angular acceleration.

What is the magnitude of the angular acceleration of the salad spinner as it slows down?

Express your answer numerically in radians per second per second.

1

(a) How far from a 54.2 mm focal-length lens must an object be placed if its image is to be magnified 2.36? and be real?
_____ mm
(b) What if the image is to be virtual and magnified 2.36??
__________ mm

2

A diverging lens with a focal length of -14 cm is placed 14 cm to the right of a converging lens with a focal length of 18 cm. An object is placed 31 cm to the left of the converging lens.

(a) Where will the final image be located?
__________cm left of the converging lens
(b) Where will the image be if the diverging lens is 34 cm from the converging lens?
____________cm right of the diverging lens

A child slides down a hill on a toboggan with an acceleration of 1.5 m/s2.

Part A If she starts at rest, how far has she traveled in 1.0 s? Express your answer using two significant figures. dd = nothing m

Part B If she starts at rest, how far has she traveled in 2.0 s? Express your answer using two significant figures. dd = nothing m

Part C If she starts at rest, how far has she traveled in 3.0 s? Express your answer using two significant figures. dd = nothing m