Start your trial now! First week only $4.99!*arrow_forward*

Question

A rock takes 2.55 s to hit the ground when it is thrown straight up from the cliff with an initial velocity of 7.5 m/s.

Calculate the height of the cliff in m.

h=

How long would it take to reach the ground if it is thrown straight down with the same speed?

t=

Tagged in

Science

Physics

Find answers to questions asked by students like you.

Q: A uniformly charged disk with radius R= 35.0 cm and uniform charge density a-8.40 x 10 C/m lies in t...

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts fo...

Q: The electric field between two parallel plates is uniform, with magnitude 704 N/C. A proton is held ...

A: Given:Magnitude = 704 N/CThe plate separation = 4.06 cm

Q: How can you distinguish the primary winding from the secondary winding in a step-up transformer?

A: Click to see the answer

Q: the ball is kicked from point A with the initial velocity VA = 10m/s. determine the time in seconds ...

A: Click to see the answer

Q: Shown are two thin beams joined at right angles. The vertical beam is 15.0 kg and 1.00 m long and th...

A: (a) The center of gravity of the two joined beams can be determined as follows.

Q: One of the most difficult things to learn in physics is that our everyday language is not always pre...

A: Explanation: The direction of acceleration depends on the direction of motion of the car and its mo...

Q: If you put a heavy load in a wheelbarrow, the force you apply to the handles is much less than the w...

A: In order for the wheelbarrow to maintain one orientation, the sum of all the torques around the axis...

Q: *30. ao The drawing shows a graph of the angular velocity of a rotating wheel as a function of time....

A: Click to see the answer

Q: A half-full recycling bin has mass 3.0 kg and is pushed up a 40.0° incline with constant speed under...

A: Click to see the answer

Q: As space exploration increases, means of communicationwith humans and probes on other planets are be...

A: Given

Q: The four wheels of a car are connected to the car’s body by spring assemblies that let the wheels mo...

A: Click to see the answer

Q: An old-fashioned tire swing exerts a force on the branch and a torque about the point where the bran...

A: Click to see the answer

Q: 35. Some bacteria are propelled by biological motors that spin hairlike flagella. A typical bacteria...

A: It is given that,

Q: Shown is, a 70 kg man walks out on a 10 kg beam that rests on, but is not attached to, two supports....

A: Click to see the answer

Q: Leaf Blower The intensity of the sound from a certain leaf blower is measured at 3.2 x 10-2 W/m2. Fi...

A: Click to see the answer

Q: An object floats in water, with 75% of its volume submerged. What is its approximate density?A. 250 ...

A:

Q: What is the average kinetic energy of helium atoms in a region of the solar corona where the tempera...

A: Click to see the answer

Q: The solid dot shown in Fig. 8–36 is a pivot point. The board can rotate about the pivot. Which force...

A: Assume the length of the board is x. (a) For Force F = 1000 N, the torque can be calculated as, Her...

Q: How many moles of hydrogen molecules are needed to react with one mole of oxygen molecules?

A: Given: Moles of oxygen (no) = 1 mole.

Q: Define impedance?

A: Impedance is defined as the effective resistance in an ac circuit offered by inductor or capacitor a...

Q: Calculate (a) the x- and (b) y-components of the vector with magnitude 24.0 m and direction 56.0º.

A: Click to see the answer

Q: (II) You drop a ball from a height of 2.0 m, and it bouncesback to a height of 1.6 m. (a) What fract...

A: Click to see the answer

Q: An objects position in the x-direction as a function of time is given by the expression: x(t)=5t^2 +...

A: The position of the object, x(t) = 5t2 + 2t The initial time, t1 = 1.15 s The final time, t2 = 2.07 ...

Q: A vessel of cylindrical shape is 70 cm in diameter and 90 cm high. It contains 7 kg of a gas. The pr...

A: Click to see the answer

Q: Explain the difference between the heat capacities of an ideal gas and a real gas?

A: The expression for the heat capacity of an ideal gas is given as, *Here γ is the degree of freedom ...

Q: A boy pulls a 5-kg cart with a 20-N force at an angle of 30° above the horizontal for a length of ti...

A: Given data Cart's mass is: m = 5 kg The force magnitude applied on the cart is: F = 20 N The distanc...

Q: There are four traffic lights on a stretch of road and the distance between each traffic light is 30...

A: The following data is provided: 4 traffic lights at a distance of 300m each 10 sec lag between traff...

Q: Give an example of a situation in which there is a force and a displacement, but the force does no w...

A: Click to see the answer

Q: Find the terminal velocity of a spherical bacterium (diameter 2.00 μm ) falling in water. You will f...

A: Click to see the answer

Q: A 55 g soapstone cube—a whisky stone—is used to chill a glass of whisky. Soapstone has a density of ...

A: Click to see the answer

Q: A 35-cm-tall, 5.0-cm-diameter cylindrical beaker is filled to its brim with water. What is the downw...

A: Given data *The diameter of cylindrical beaker is d = 5.0 cm = 0.05 m *The length of the beaker is h...

Q: (II) A mallet consists of a uniform cylindrical head of mass 2.30 kg and a diameter 0.0800 m mounted...

A: Given: A mallet consists of a uniform cylindrical head of mass2.30 kg and a diameter 0.0800 m mounte...

Q: Treat a cell in a human as a sphere with a radius of 1.0

A: Given, the radius of a cell assuming it to be spherical, r=1 micrometre We need to estimate the num...

Q: Problem 7 Geosynchronous Satellites. Many satellites are moving in a circle in the earth's equatoria...

A: Click to see the answer

Q: A rod 10.0 cm long is uniformly charged and has a total charge of -23.0 µC. Determine the magnitude ...

A: Click to see the answer

Q: Which is more dangerous, a closet where tanks of nitrogen are stored, or one where tanks of carbon d...

A: Given: Closet tanks of nitrogen are stored Tanks of carbon dioxide are stored

Q: A long, straight wire of radius R carries a current I that is distributed uniformly over the cross-s...

A: Click to see the answer

Q: You have a parallel plate capacitor with plates of 2.0 m2 , 3.0 m apart, and themagnitude of charge ...

A: Write the formula for the capacitance of a parallel plate capacitor. Substitute the known value and...

Q: Two cars both cover a straight distance, d = 274 m, in time t = 23 s. Car A moves at a constant velo...

A: Given data The distance covered by the car is: d = 274 m The time taken to cover the distance is: t ...

Q: A high-performance sports car can go from 0 to 100 mph (44.7 m/s) in 7.9s. a) What is the car's av...

A: Click to see the answer

Q: A gun fires a bullet vertically into a 1.40-kg block of wood at rest on a thin horizontal 1.40 kg sh...

A: Click to see the answer

Q: The same heat transfer into identical masses of different substances produces different temperature ...

A: Click to see the answer

Q: *10. mmh A stream of water strikes a Stationary turbine "0 = +16.0 m/s stationary turbine blade hori...

A: Given: Incident velocity of water (vo) = +16.0 m/s. Exiting velocity of water (vf) = -16.0 m/s. Rate...

Q: In climbing up a rope, a 62-kg athlete climbs a vertical distance of 5.0 m in 9.0 s. What minimum po...

A: Given Data: The mass of an athlete is m=62 kg The vertical distance is, d=5 m The time required to c...

Q: (II) Two bullets are fired at the same time with the samekinetic energy. If one bullet has twice the...

A: The formula for the kinetic energy is, Here, v is the velocity of a bullet and m is the mass of a b...

Q: Objects A, B, and C as shown have the same volume. Rank in order, from largest to smallest, the size...

A: The buoyant force is the fluid's property, which is applied over the surface of the immersed body. F...

Q: A worker walks up the sloped roof that is defined by the curve y = (5e0.01x) ft, where x is in feet....

A: Given: A worker walks up the sloped roof that is defined by the curve y = (5e0.01x) ft, where x is i...

Q: Physics Question

A: Click to see the answer

Q: (III) A 725-kg two-stage rocket is traveling at a speed of 6.60 x103 m/saway from Earth when a prede...

A: Click to see the answer

Q: (II) A small rubber wheel is used to drive a large potterywheel. The two wheels are mounted so that ...

A: Given The radius of the driving wheel is r1 = 2 cm = 2 x 10-2 m. The angular acceleration of the dri...