Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 19 m/s at an angle 49 degrees; with respect to the horizontal. Sarah catches the ball 1.5 meters above the ground.

1. What is the maximum height the ball goes above the ground?

2. What is the distance between the two girls?

3. After catching the ball, Sarah throws it back to Julie. The ball leaves Sarah's hand a distance 1.5 meters above the ground, and is moving with a speed of 14 m/s when it reaches a maximum height of 14 m above the ground.

What is the speed of the ball when it leaves Sarah's hand?

4. How high above the ground will the ball be when it gets to Julie? (note, the ball may go over Julie's head.)

You are driving up a long, inclined road. After 1.40 mi you notice that signs along the roadside indicate that your elevation has increased by 530 ft . You may want to review (Pages 62 - 65) .

What is the angle of the road above the horizontal?

How far do you have to drive to gain an additional 130 ft of elevation?

Complete the following nuclear equations:

When doing these equations you are obeying the law of conservation of mass and charge. What this means is that the sum of top numbers (masses) on the left side must equal the sum of the masses on the right. It also means the sum of the bottom numbers (charges) on the left equal the sum of the charges on the right. The charge (atomic number) of the isotope determines the element. Look on the periodic table to find the identity of the element.

1. ⁸Li₃à ^oe_-1 + ⁴He₂ + _____

2. ³²P₁₅à ⁰e_-1+ ________

3. ⁶⁰Co₂₇à ⁰e_-1 + ______

4. ⁹⁷Tc₄₃ + ⁰e_-1à _______

5. ⁹⁹Tc₄₃à b + _______

6. ²³⁹Pu₉₄àa + ____

7. ¹H₁ + ¹⁴N₇à ________+ a

8.   ³He₂ + ³He₂à 2 ¹H₁ + ______

9. 2 ¹H₁à ²H₁ + _____

10. ¹p₁ + ¹²C₆à _________

11. ________+ a à ²⁴³Bk₉₇ + ¹n₀

12. ²³⁸U₉₂ + ¹²C₆à ______ + 6 neutrons

13. ²⁴⁹Cf₉₈ + _______à ²⁶³Sg₁₀₆ + 4 neutrons

14. ²⁴⁹Cf₉₈ + ¹⁰B₅à ²⁵⁷Lr₁₀₃ + ______

15. ²³⁸U₉₂à ⁴He₂+ _____

16. ¹⁴C₆à β + ________

17. ²³⁵U₉₂--à _________ + 4 neutrons

18. ⁵Li₃-à α + ______

19. ²⁰⁸Pb₈₂-à α + ______

20. ⁶³Cu₂₉ + ²H₁à 2¹n₀ + _____

21. ⁴⁴Ca₂₀ + ¹H₁à ⁴⁴Sc₂₁ + _____

22. ⁹Be₄ + α à ¹²C₆ + ______

23. ³¹P₁₅ + ²H₁à ³²P₁₅ + _____

24. ³⁷Cl₁₇ + _____ à ³⁵S₁₆ + α

25. ²H₁ + ²H₁à ¹H₁ + _____

26. ¹¹B₅ + ⁴He₂à ¹⁴N₇ + ____

27. ⁶³Cu₂₉ + ²H₁à ⁶⁴Zn₃₀ + ____

28. ²³⁹Pu₉₄ + α à ¹n₀ + ______

29. ⁶³Cu₂₉ + ¹H₁à ³⁸Cl₁₇ + ¹n₀ + ____

30. ²³⁵U₉₂ + ¹n₀à ⁹⁵Mo₄₂ + 2¹n₀ + _____

31. ____________ಳ⁷Np₉₃ + α

32. ¹²²Sb₅₁ + α à ______

33. ²³Na₁₁+ αà ²⁶Mg₁₂ + _____

An open container holds ice of mass 0.525 kg at a temperature of -18.2 ∘C . The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 830 J/minute . The specific heat of ice to is 2100 J/kg⋅K and the heat of fusion for ice is 334×103J/kg.ow much time tmelts passes before the ice starts to melt? From the time when the heating begins, how much time trise does it take before the temperature begins to rise above 0∘C?

Describe how Fermat’s principle and Huygens-Fresnel principle can be applied to explain and analyze different phenomena in wave and geometrical optics

Note: Please acknowledge the list of possible answers for each question. The CORRECT answer is one of those answers. An answer that does NOT match one of the listed answers is INCORRECT.

Question:

Part A) On a loop-the-loop of diameter D = 37.8 ± 0.5 cm, what is the expected minimum starting height hthat the ball must be released from to make it around the loop?

Possible answers: 0.601, 0.903, 0.506, 0.571, 0.806, 0.51, 0.822, 0.849, 0.667, 0.927

Part B) On a loop-the-loop of 45.0 ± 0.7 cm in diameter, what is the uncertainty in the expected minimum starting height σ_h that the ball must be released from to make it around the loop?

Possible answers: 0.003, 0.004, 0.005, 0.008, 0.009, 0.011. 0.001

Part C) If, on the loop-the-loop of diameter 46.3 ± 0.5 cm, the minimum height found by testing is h_meas = 73.5 ± 1 cm, what fraction of the ball's energy is lost to friction and wobble?

Possible answers: 0.183, 0.15, 0.322, 0.222, 0.25, 0.082, 0.223, 0.138, 0.144, 0.177

Part D) If, on the loop-the-loop of diameter 43.1 ± 0.7 cm, the minimum height found by testing is h_meas = 78.5 ± 0.6 cm, what is the uncertainty in the fractional energy is loss?

Possible answers: 0.005, 0.013, 0.004, 0.01, 0.014, 0.009, 0.011, 0.012, 0.006, 0.007

Two isolated concentric conducting spherical shells have radii R1=0.5 m and R2=1 m,

uniform charges q1=+2.0 μC and q2=+1 μC, and negligible thickness. Assume that V=0 at infinity.​

(a) What is the magnitude of the electric field at a radial distance of r=4 m?
(b) What is the magnitude of the electric field at a radial distance of r=0.7 m?
(c) What is the magnitude of the electric field at a radial distance of r=0.2 m?
(d) What is the potential at r=4 m?
(e) What is the potential at r=1 m?
(f) What is the potential at r=0.7 m?
(g) What is the potential at r=0.5 m?
(h) What is the potential at r=0.2 m?
(i) What is the potential at r=0 m?
(j) sketch E(r) and V(r).​

What are the different types of magnetization of a rock?

gas molecules have speeds comparable with those of rifle bullets, yet it is observed that a gas with a strong odor (ammonia, for instance) takes a few minutes to diffuse through a room why?

A thin film of oil (n = 1.4) of thickness 1.4micrometers. is compressed between two glass slabs (n = 1.5).

White light containing wavelengths from 400 to 700nm (measured in air) is incident normally on the film.

In the reflected light, which wavelengths (from long to short)are a) missing (4 of them) and b) enhanced (4 of them)

In a rectangular coordinate system, a positive point charge q = 8.00 nC is placed at the point x = +0.150 m, y = 0, and an identical point charge is placed at x = -0.150 m, y = 0. Find the electric field at the following points.

a. Find the x and y components of the electric field at x = 0, y = 0.200 m.

Express your answers in newtons per coulomb separated by a comma.

b. Find the magnitude of the electric field at x = 0, y = 0.200 m.

Express your answer in newtons per coulomb.

c. Find the direction of the electric field at x = 0, y = 0.200 m.

Express your answer in degrees.

Two divers jump from a 3-m platform. One jumps upward at 1.50m/s , and the second steps off the platform as the first passes it on the way down.

a) What is the first diver's speed as he hits the water?

b) What is the second diver's speed as he hits the water?

c) Which hits the water first?

Does a magnetic dipole (in a permanent magnet) tend to align with the B-field or with the H-field?

The current loop (Amp