A 950 kg car turns around a curve of a radius 30 m on a level road. If the coefficient of static friction between the tires and the road is 0.55, how fast can the car go around the curve without sliding?

At a given latitude, ocean water in the so-called "mixed layer" (from the surface to a depth of about 50 m) is at approximately the same temperature due to the mixing action of waves. Assume that because of global warming, the temperature of the mixed layer is everywhere increased by 0.1 ∘C, while the temperature of the deeper portions of the ocean remains unchanged.Estimate the resulting rise in sea level. The ocean covers about 70 %of the Earth's surface.

Express your answer using one significant figure.

plz...

You attach a 1.50 kg block to a horizontal spring that is fixed at one end. You pull the block until the spring is stretched by 0.500 m and release it from rest. Assume the block slides on a horizontal surface with negligible friction. The block reaches a speed of zero again 0.500 s after release (for the first time after release). What is the maximum speed of the block (in m/s)?

System A has masses m and m separated by a distance r; system B has masses m and 2m separated by a distance 2r; system C has masses 2m and 3m separated by a distance 2r; and system D has masses 4m and 5m separated by a distance 3r.

Rank these systems in order of decreasing gravitational force.

If rank items are equivalent, state as such; if the correct ranking cannot be determined, state as such.

A ball of putty with mass 500 g and negligible size is moving at a speed of v = 3.2 m/s before it strikes a stationary rod of length L = 42 cm and mass 2 kg that is allowed to pivot around its center. What is angular speed of the putty and rod system if the putty sticks to the rod?

A playground merry-go-round has a disk-shaped platform that rotates with negligible friction about a vertical axis. The disk has a mass of 200 kg and a radius of 1.6 m. A 34- kg child rides at the center of the merry-go-round while a playmate sets it turning at 0.15rpm. If the child then walks along a radius to the outer edge of the disk, how fast will the disk be turning? (in rpm - but enter no unit)

It is proposed to store 1.00kW?h=3.60

A thin uniform pole of length 30 m is pivoted at the bottom end. Calculate the most probable point of rupture on the pole as the pole falls.

STEP BY STEP PLEASE I am trying to understand this.

A 74.0-kg bungee jumper steps off a bridge with a light bungee cord tied to her and to the bridge. The unstretched length of the cord is 14.0 m. The jumper reaches reaches the bottom of her motion 40.0 m below the bridge before bouncing back. We wish to find the time interval between her leaving the bridge and her arriving at the bottom of her motion. Her overall motion can be separated into an 14.0-m free-fall and a 26.0-m section of simple harmonic oscillation.

(a) For the free-fall part, what is the appropriate analysis model to describe her motion.

-particle under constant angular acceleration

-particle under constant acceleration    

-particle in simple harmonic motion

(b) For what time interval is she in free-fall?s

(c) For the the simple harmonic oscillation part of the plunge, is the system of the bungee jumper, the spring, and the Earth isolated or non-isolated?

-isolated

-non-isolated    

(d) From your response in part (c) find the spring constant of the bungee cord.N/m

(e) What is the location of the equilibrium point where the spring force balances the gravitational force exerted on the jumper?
m below the bridge

(f) What is the angular frequency of the oscillation?rad/s

(g) What time interval is required for the cord to stretch by 26.0 m?s

(h) What is the total time interval for the entire 40.0-m drop? s

Calculate the critical radius of the core of a spherical thermal reactor moderated by graphite both with and without (bare) an infinite reflector of graphite to show reflector savings. The reactor (at room temp.) is fueled with 235U at a concentration of 4.0 x 10-4 gm/cm3

Please make sure to give practice problems for each given scenario in the quantitative problems and to explain the qualitative problems, thoroughly.

The final exam is this Friday so please answer ASAP.

Quantitative problems

1. Circuit with capacitors and resistor (charging and discharging), and/or an inductor and
a resistor.
2. Kirchhoff problem.
3. Force and maybe torque on a wire in a magnetic field.
4. AC circuit problem with transformers, root mean square quantities, and power.
5. AC circuits problem finding complex impedance, phase, and resonance.

Qualitative problems

1. LC circuits, energy conservation, spring-mass comparison.
2. Fields, electric and magnetic. What do they mean, why are they useful, and when do
they produce force.
3. Maxwell’s equations. What are the sources of fields, and how do fields interact.
4. LRC circuits. Describe the three cases and damped oscillator analogy.
5. Discuss the underlying conservation laws for the Kirchhoff rules.

What is the length of a one-dimensional box in which an electron in the n = 1, state has the same energy as a photon with a wavelength of 600 nm? What is the energy of n = 2 and n =3 state? What energy of a photon, if absorbed by the electron could move it from the n = 1 state to the n = 2 state? Write legibly.

Suppose that you have found a way to convert the rest energy of any type of matter directly to usable energy with an efficiency of 65.0 % . How many liters of water would be sufficient fuel to very slowly push the Moon 2.50 mm away from the Earth? The density of water is ρ water = 1.00 kg/liter , the Earth's mass is M earth = 5.97 × 10 24 kg , the Moon's mass is M moon = 7.36 × 10 22 kg , and the separation of the Earth and Moon is d E,M = 3.84 × 10 8 m .

A 22-cm-diameter cylinder that is 43 cm long contains 44 g of oxygen gas at 20∘C

What is the reading of a pressure gauge attached to the tank?