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Physics
Page 9
Questions (149,192)
(a) Photoelectrons with a maximum kinetic energy of 7.6eV are emitted from a metal when it is illuminated by ultraviolet
3 answers
asked by
Anon
1,770 views
The mass of the roller coaster below is 80 kg. It starts from rest at a height of 30 m and reaches a speed of 20 m/s at point B.
4 answers
asked by
Heylee Green
1,010 views
calculate the volume occupied by 10^22 molecules of a gas 300 k and 760 mm pressure.
please help me please...................
4 answers
asked by
abby
4,062 views
An eagle flying along a horizontal path drops a small snake from a height of 6.5 m while travelling 5.0 m/s. How far does the
4 answers
asked by
Michael
953 views
Use the table of observations about the electric force between charged objects to answer the question.
Charge of Object 1 (C) +1
1 answer
asked anonymously
148 views
A spring balance attched to the ceiling of an elevator supports a 10N object. In each of the following casses, tell whether
3 answers
asked by
Klari
1,023 views
How does a flashlight illustrate the law of conservation of energy
1 answer
asked anonymously
93 views
Use the table of electric force between objects in two different interactions to answer the question.
Interaction Charge on
1 answer
asked anonymously
58 views
Sound travels through a guitar string at 600 m/s, making a sound wave in the air with a speed of 333 m/s. In 1–2 sentences,
1 answer
asked by
aaagtuygy
54 views
a man 80kg carries a load of bricks of mass 20kg up a vertical ladder of length 6m what work has he done
7 answers
asked by
ISAAC
4,235 views
A box of mass m = 6kg slides with speed v = 4 m/s across a frictionless floor. It suddenly explodes into two pieces. One piece,
6 answers
asked by
Shahab Mirza
4,481 views
Which unit is used to measure force?(1 point)
11 answers
asked by
sebastian chapa
2,860 views
Suppose that an object is dropped from a height of h meters and hits the ground with a velocity of v meters per second. Then v=
6 answers
asked by
Bryan
13,389 views
How much heat is required to raise the temperature of 250.0 g of mercury 52ºC? The specific heat of mercury is 0.14 J/(gºC).
7 answers
asked by
Meg Hat
11,540 views
A baseball is thrown upwards from a height of 2 meters with an initial velocity of 10 meters per second. Use the fact that -9.8
4 answers
asked by
Emily
8,177 views
A weight is attached to a spring that is oscillating up and down it takes 6 sec for the spring to complete one cycle and the
5 answers
asked by
Stan
6,460 views
Use the information in the table about four different electric circuits to answer the question.
Circuit Resistance (ohms) Voltage
7 answers
asked by
Lilly
539 views
1) A 20 kg rock is on the edge of a 100 m cliff.
a. What potential energy does the rock possess relative to the base of the
5 answers
asked by
Isis
11,914 views
What three factors affect electric force? Choose all that apply
a whether the charge is positive or negative b amount of charge c
1 answer
asked by
re
194 views
Lukalu is rappelling off a cliff. The parametric equations that describe her horizontal and vertical position as a function of
6 answers
asked by
Apryl
2,611 views
The following samples are all water. Other than the temperature, all the water samples are identical. Which of the four samples
1 answer
asked by
kali
156 views
A group of students sets up an electric circuit with wires, a battery, and a light bulb. Why is their circuit called a direct
3 answers
asked by
Hlo
442 views
The drawing shows a student holding two negatively charged balloons.
What is most likely to occur if the student brings the
1 answer
asked by
6
171 views
Select the correct answer to complete the sentence. Gravitational force is said to be universal because:
- it applies to all
13 answers
asked by
Haile
9,589 views
A large truck and a small car are found to have the same kinetic energy. How is this possible?
The Answer is The car must be
10 answers
asked by
Addison
4,093 views
A hydraulic plunger has a 12 cm diameter and a force of 350 kN acts on it. What is the pressure exerted on the plunger?
4 answers
asked by
jay
1,924 views
A person is riding a skateboard on a U-shaped ramp. At which point does the person have the greatest potential energy?(1 point)
i
14 answers
asked by
Jimmy
6,560 views
A 40 kg ball is pukled to one side until it is 1.5 above itd lowest point. What will be its velocity as it passes through its
5 answers
asked by
Merely
4,190 views
a battery has an e.m.f of 6 volts and an internal resistance of 0.4 ohm.it is connected to a 2.6 ohm resistor through a
9 answers
asked by
komal yaseen
12,476 views
A toy rocket has a mass 0f 350g at launch. The force it produces is 15N and it is fired at an angle of 65° to the horizontal.
10 answers
asked by
Joseph
5,804 views
A horizontal force of 804 N is needed to drag a crate across a horizontal floor with a constant speed. You drag the crate using
5 answers
asked by
Anonymous
3,618 views
An electron is excited from the n=1 ground state to the n=3 state in a hydrogen atom. Which of the following statements are
7 answers
asked by
Anonymous
19,780 views
A 4.0 kg object is lifted 1.5 m. (a) how much work is done against the earth's gravity ? (b) repeat if the object is lowered
7 answers
asked by
jack
7,687 views
A light ray incident upon a mirror makes an angle of 36 with the mirror , what is the angle between incident ray and the
4 answers
asked by
=
2,758 views
Wayne pulls a 305 N sled along a snowy path using a rope that makes a 45.0° angle with the ground. Wayne pulls with a force of
5 answers
asked by
Merlin
6,045 views
You dip your finger into a pan of water twice each second, producing waves with crests that are separated by 0.15 m. Determine
5 answers
asked by
Dominique
9,406 views
A cylindrical oil storage tank 12 feet in diameter and 17feet long is lying on its side. Suppose the tank is half full of oil
6 answers
asked by
Mishaka
5,176 views
A refrigerator has a coefficient of performance of 4.0. When removing 2.4x10^4 J from inside the refrigerator, how much energy
4 answers
asked by
Q
5,449 views
Newton’s cradle is a contraption where metal balls hang from a frame. When one ball is pulled and released, the collision
44 answers
asked by
I NEED HELP FAST PLS!!!!!
2,859 views
A 10uf capacitor is charged from a 30v supply and then connected across an uncharged 50uf capacitor.Calculate
a. The final
5 answers
asked by
Gift
18,955 views
A 0.02 kg ball moving to the right at 0.25 m/s makes an elastic head-on collision with a 0.04 kg ball moving to the left at 0.15
7 answers
asked by
Please help
8,106 views
The tine of a tuning fork, when struck, has an amplitude of 0.13 cm. If the frequency of the fork is 200 Hz, what total distance
5 answers
asked by
HanuPhys26/11
3,779 views
A 1200 lb sleigh is pulled along a horizontal surface at uniform speed by means of a rope that makes an angle of 30 degrees
5 answers
asked by
Lian
3,932 views
An FM radio station broadcasts its signal at a frequency of 9.15 ×107 hertz. Determine the wavelength of the signal in air.
5 answers
asked by
ashley --
2,808 views
An object located 18 cm from a convex mirror prodeucses a virtual image 9 cm from the mirror. What is the magnification of the
5 answers
asked by
Shirley
3,561 views
A bowling ball rolls without slipping up a ramp that slopes upward at an angle (beta) to the horizontal. Treat the ball as a
4 answers
asked by
Joe
7,680 views
An object is placed at a distance of 60 cm from a converging lens with a focal length of 20cm. What is the magnification of the
5 answers
asked by
Lance
3,474 views
current through a device is 0.30 A, and the resistance in the device is 40 Ù. How many 1.5 V batteries are required to run the
4 answers
asked by
Pat
2,626 views
The path of a particle moving in a straight line is given by s=t^3-6t^2+9t+4.
a. Find s and a when v=0. b. Find s and v when a=0.
5 answers
asked by
eyyy
2,690 views
A non-rotating cylindrical disk of moment of inertia I is dropped onto an identical disk rotating at angular speed w. Assuming
5 answers
asked by
Aja
4,557 views
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