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Aasrul B.

Physics 101 Mechanics

30 minutes ago

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GG

Gadget G.

Physics 101 Mechanics

20 hours ago

Hello - Could you solve this specific problem below for me? Thank you! Blood can carry excess energy from the interior to the surface of the body, where the energy is dispersed in a number of ways. While a person is exercising, 0.9 kg of blood flows to the bodyÔÇÖs surface and releases 2000 J of energy. The blood arriving at the surface has the temperature of the bodyÔÇÖs interior, 37 oC. Assuming that blood has the same specific heat capacity as water, determine the temperature of the blood that leaves the surface and returns to the interior. (cwater = 4186 J/kgoC)

GG

Gadget G.

Physics 101 Mechanics

1 day ago

Suppose that the steel gas tank in your car is completely filled when the temperature is 15 oC. How many gallons will spill out of the twenty-gallon tank when the temperature rises to 32 oC? (B = 950 x 10-6 oC-1)

Ah M.

Physics 101 Mechanics

1 day ago

The crust of the Earth is covered by about ________ water in the hydrosphere.

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Asfd D.

Physics 101 Mechanics

1 day, 7 hours ago

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Asfd D.

Physics 101 Mechanics

1 day, 8 hours ago

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KS

Kaung S.

Physics 101 Mechanics

2 days, 1 hour ago

an athlete who has a mass of 55 kg stands at the free end of a platform as she is about to dive. The diving board has a length of 3.00 m and is in contact with a building structure at 2 points. Consider that the diving board is uniform and has a mass of 25 kg

KS

Kaung S.

Physics 101 Mechanics

2 days, 1 hour ago

an athlete who has a mass of 55 kg stands at the free end of a platform

KM

Kristina M.

Physics 101 Mechanics

2 days, 2 hours ago

A student holds an $80.00-\mathrm{cm}$ lab pole one quarter of the length from the end of the pole. The lab pole is made of aluminum. The student strikes the lab pole with a hammer. The pole resonates at the lowest possible frequency. What is that frequency?

DH

Darlene H.

Physics 101 Mechanics

2 days, 2 hours ago

To increase the intensity of a wave by a factor of 50 by what factor should the amplitude be increased?

MM

Mario M.

Physics 101 Mechanics

2 days, 2 hours ago

As shown below, if $M=5.50 \mathrm{kg},$ what is the tension in string 1?

PE

Patrick E.

Physics 101 Mechanics

2 days, 2 hours ago

A police car waits in hiding slightly off the highway. A speeding car is spotted by the police car doing $40 \mathrm{m} / \mathrm{s}$. At the instant the speeding car passes the police car, the police car accelerates from rest at $4 \mathrm{m} / \mathrm{s}^{2}$ to catch the speeding car. How long does it take the police car to catch the speeding car?

PL

Patrick L.

Physics 101 Mechanics

2 days, 2 hours ago

Suppose you have a 120-kg wooden crate resting on a wood floor, with coefficient of static friction 0.500 between these wood surfaces. (a) What maximum force can you exert horizontally on the crate without moving it? (b) If you continue to exert this force once the crate starts to slip, what will its acceleration then be? The coefficient of sliding friction is known to be 0.300 for this situation.

EG

Evelyn G.

Physics 101 Mechanics

2 days, 2 hours ago

Two blocks are connected by a massless rope as shown below. The mass of the block on the table is 4.0 kg and the hanging mass is $1.0 \mathrm{kg}$. The table and the pulley are frictionless. (a) Find the acceleration of the system. (b) Find the tension in the rope. (c) Find the speed with which the hanging mass hits the floor if it starts from rest and is initially located 1.0 m from the floor.

PA

Patrick A.

Physics 101 Mechanics

2 days, 2 hours ago

Athletes such as swimmers and bicyclists wear body suits in competition. Formulate a list of pros and cons of such suits.

Cc

Canary C.

Physics 101 Mechanics

2 days, 2 hours ago

Suppose that you are holding a cup of coffee in your hand. Identify all forces on the cup and the reaction to each force.

MH

Michelle H.

Physics 101 Mechanics

2 days, 2 hours ago

(a) A rectangular gasoline tank can hold 50.0 kg of gasoline when full. What is the depth of the tank if it is 0.500-m wide by 0.900-m long? (b) Discuss whether this gas tank has a reasonable volume for a passenger car.

PR

Patrick R.

Physics 101 Mechanics

2 days, 2 hours ago

Juanita goes for a walk. Sometime later, her friend Heather starts to walk after her. Their motions are represented by the position-time graphs in Figure $2-16$ a. How long had Juanita been walking when Heather started her walk? b. Will Heather catch up to Juanita? How can you tell? CAN'T COPY THE FIGURE

Ee

Email E.

Physics 101 Mechanics

2 days, 2 hours ago

Sunee is training for an upcoming 5.0 -km race. She starts out her training run by moving at a constant pace of $4.3 \mathrm{m} / \mathrm{s}$ for 19 min. Then she accelerates at a constant rate until she crosses the finish line, 19.4 s later. What is her acceleration during the last portion of the training run?

at

Alex T.

Physics 101 Mechanics

2 days, 2 hours ago

You start your bicycle ride at the top of a hill. You coast down the hill at a constant acceleration of $2.00 \mathrm{m} / \mathrm{s}^{2}$. When you get to the bottom of the hill, you are moving at $18.0 \mathrm{m} / \mathrm{s},$ and you pedal to maintain that speed. If you continue at this speed for 1.00 min, how far will you have gone from the time you left the hilltop?

JL

John L.

Physics 101 Mechanics

2 days, 2 hours ago

Roberts linkage is named after Richard Roberts $(1789-1864)$ and can be used to draw a close approximation to a straight line by locating a pen at point $F$. The distance $A B$ is the same as $B F, D F$, and $D E .$ Knowing that at the instant shown, bar $A B$ has a constant angular velocity of $4 \mathrm{rad} / \mathrm{s}$ clockwise, determine $(a)$ the angular acceleration of bar $D E,(b)$ the acceleration of point $\bar{F}$

BE

Brian E.

Physics 101 Mechanics

2 days, 2 hours ago

The flywheel shown has a radius of 20 in., a weight of $250 \mathrm{lb}$, and a radius of gyration of $15 \mathrm{in}$. A $30-1 \mathrm{b}$ block $A$ is attached to a wire that is wrapped around the flywheel, and the system is released from rest. Neglecting the effect of friction, determine (a) the acceleration of block $A,(b)$ the speed of block $A$ after it has moved $5 \mathrm{ft}$.

ET

Edward T.

Physics 101 Mechanics

2 days, 2 hours ago

A monorail train starts from rest on a curve of radius $400 \mathrm{m}$ and accelerates at the constant rate $a_{t}$. If the maximum total acceleration of the train must not exceed $1.5 \mathrm{m} / \mathrm{s}^{2}$, determine $(a)$ the shortest distance in which the train can reach a speed of $72 \mathrm{km} / \mathrm{h},(b)$ the corresponding constant rate of acceleration $a_{t} .$

TE

Thomas E.

Physics 101 Mechanics

2 days, 2 hours ago

The velocities of skiers $A$ and $B$ are as shown. Determine the velocity of $A$ with respect to $B .$

TJ

Tina J.

Physics 101 Mechanics

2 days, 2 hours ago

Two identical uniform bricks of length $L$ are placed in a stack over the edge of a horizontal surface with the maximum overhang possible without falling, as in Figure P12.24. Find the distance $x .$

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